Insulation protection structure of power battery box and new energy vehicle

Abstract

The present invention relates to an insulating protection structure of a power battery box and a new energy vehicle. The insulating protection structure of the power battery box comprises a box body, an output pole connector is arranged on the box wall of the box body, a metal component is fixed inside the box body, two insulating protection plates arranged at intervals are arranged between the box wall of the box body and the metal component, and a through hole for the electrode terminal of the output pole connector to pass through is provided on the insulating protection plate close to the box wall, and the electrode terminal of the output pole connector passes through the through hole and extends into the interval between the two insulating protection plates. When the power battery box where the connector is installed is hit or squeezed, the insulating protection plate close to the box wall can prevent the electrode terminal of the connector from contacting with the metal component in the box body and causing a short circuit, and the insulating protection plate close to the metal component can prevent the electrode terminal of the connector from contacting with the box wall of the power battery box and causing a short circuit, thereby ensuring the safe operation of the electric vehicle.

Description

Technical Field

[0001] The invention relates to an insulation protection structure of a power battery box and a new energy vehicle. Background Art

[0002] With the development of new energy vehicles and energy storage technology, the technology of power batteries is also constantly improving, and the application of power battery systems in the automotive field is becoming more and more extensive. The power battery box of existing electric vehicles includes a box body, on which an output pole connector is provided. The box body and the output pole connector are rigidly connected. When the electric vehicle is driving, when braking, accelerating or a traffic accident occurs, due to the effect of inertia, the power battery box will be subjected to a large external force, causing the power battery box and the connector to be squeezed or collided. When the impact intensity of the power battery box is relatively large, the output pole connector on the battery is squeezed to move toward the inside of the battery box, and the electrode terminal of the output pole connector may contact the box wall of the power battery box or the metal component inside the box body, causing a short circuit. Summary of the invention

[0003] The purpose of the present invention is to provide an insulating protection structure for a power battery box to solve the problem in the prior art that when the power battery box is subjected to a strong impact, the electrode terminals of the output pole connector may contact the box wall or the internal metal components of the power battery box and cause a short circuit; the purpose of the present invention is also to provide a new energy vehicle.

[0004] To achieve the above-mentioned purpose, the technical solution of the insulating protection structure of the power battery box of the present invention is: the insulating protection structure of the power battery box includes a box body, an output pole connector is provided on the box wall of the box body, a metal component is fixed inside the box body, two insulating protection plates arranged at intervals are provided between the box wall of the box body and the metal component, and a through hole for the electrode terminal of the output pole connector to pass through is provided on the insulating protection plate close to the box wall, and the electrode terminal of the output pole connector passes through the through hole and extends into the interval between the two insulating protection plates.

[0005] The beneficial effect is that when the power battery box where the connector is installed is hit or squeezed, since the insulating protection structure of the power battery box has two insulating protection plates, the insulating protection plate close to the box wall separates the electrode terminals of the connector from the metal components inside the power battery box, which can prevent the electrode terminals of the connector from contacting the metal components in the box and causing a short circuit, and the insulating protection plate close to the metal components separates the electrode terminals of the connector from the box wall, which can prevent the electrode terminals of the connector from contacting the box wall of the power battery box and causing a short circuit, thereby ensuring the safe operation of the electric vehicle.

[0006] The two insulating protection plates are fixedly connected to each other.

[0007] The two insulating protection plates are connected via a connecting plate.

[0008] The connecting plate is fixed across the ends of the two insulating protection plates.

[0009] The two insulating protection plates and the connecting plate are formed in one piece.

[0010] The insulating protection plate close to the metal component is a composite plate structure of an insulating plate and a metal plate.

[0011] The beneficial effect is that the insulating protection plate close to the metal component is a composite plate structure of an insulating plate and a metal plate, which has high compressive strength, thereby avoiding the insulating protection plate from breaking during extrusion and the electrode terminal of the connector from contacting and short-circuiting with the metal component.

[0012] The metal plate is arranged on one side of the insulating protection plate close to the electrode terminal of the output pole connector.

[0013] The insulating plate is provided with a groove, the metal plate is fixed in the groove, and the plate surface of the metal plate close to the output pole connector and the plate surface of the insulating plate close to the output pole connector are in the same plane.

[0014] At least one of the two insulating protection plates and the connecting plate is fixedly connected to a box wall or a metal component of the box body.

[0015] The bolt holes on the connecting plate are provided with a recessed structure corresponding to the bolt holes on the insulating protective plate close to the box wall of the box body, an L-shaped bracket is provided on the box wall of the box body, and the connecting plate is fixedly connected to the horizontal part of the L-shaped bracket by bolts.

[0016] The insulating protection plate close to the metal component is arranged parallel to the metal component.

[0017] The electrode terminals of the output stage connector are PIN-removable terminals.

[0018] The technical solution of the new energy vehicle of the present invention is: the new energy vehicle includes an insulating protection structure of a power battery box, the insulating protection structure of the power battery box includes a box body, an output pole connector is arranged on the box wall of the box body, a metal component is fixed inside the box body, two insulating protection plates arranged at intervals are arranged between the box wall of the box body and the metal component, and a through hole for the electrode terminal of the output pole connector to pass through is provided on the insulating protection plate close to the box wall, and the electrode terminal of the output pole connector passes through the through hole and extends into the interval between the two insulating protection plates.

[0019] The two insulating protection plates are fixedly connected to each other.

[0020] The two insulating protection plates are connected via a connecting plate.

[0021] The connecting plate is fixed across the ends of the two insulating protection plates.

[0022] The two insulating protection plates and the connecting plate are formed in one piece.

[0023] The insulating protection plate close to the metal component is a composite plate structure of an insulating plate and a metal plate.

[0024] The metal plate is arranged on one side of the insulating protection plate close to the electrode terminal of the output pole connector.

[0025] The insulating plate is provided with a groove, the metal plate is fixed in the groove, and the plate surface of the metal plate close to the output pole connector and the plate surface of the insulating plate close to the output pole connector are in the same plane.

[0026] At least one of the two insulating protection plates and the connecting plate is fixedly connected to a box wall or a metal component of the box body.

[0027] The bolt holes on the connecting plate are provided with a recessed structure corresponding to the bolt holes on the insulating protective plate close to the box wall of the box body, an L-shaped bracket is provided on the box wall of the box body, and the connecting plate is fixedly connected to the horizontal part of the L-shaped bracket by bolts.

[0028] The insulating protection plate close to the metal component is arranged parallel to the metal component.

[0029] The electrode terminals of the output stage connector are PIN-removable terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of Embodiment 1 of the insulation protection structure of a power battery box of the present invention;

[0031] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0032] Figure 3 for Figure 1 Schematic diagram of two insulating protection plates and connecting plates;

[0033] Figure 4 for Figure 3 A top view of

[0034] Figure 5 for Figure 4 Sectional view along line BB;

[0035] Figure 6 for Figure 1 The schematic diagram of the structure of the output pole connector of the power battery box is shown.

[0036] Explanation of the reference numerals: 1. Box body; 2. Output pole connector; 21. Connector body; 22. Electrode terminal; 4. Insulation protection member; 41. Connecting plate; 42. First insulation protection plate; 43. Second insulation protection plate; 44. Metal plate; 45. Recessed structure; 46. Through hole; 5. Mounting and fastening structure; 6. Metal component; 7. Bracket. DETAILED DESCRIPTION

[0037] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0038] Embodiment 1 of the insulation protection structure of the power battery box of the present invention, as shown in Figures 1 to 6 As shown, the insulation protection structure of the power battery box includes a box body 1, an output pole connector 2 is provided on the box body 1, the output pole connector 2 includes a connector body 21 and an electrode terminal 22 connected to the connector body 21, the electrode terminal 22 is a retractable PIN terminal, an electrode terminal mounting and fastening structure 5 is provided on the electrode terminal 22, a metal component 6 is fixed inside the box body 1, and two insulation protection plates arranged at intervals are provided between the box wall of the box body 1 and the metal component 6, and the two insulation protection plates are respectively a first insulation protection plate 42 and a second insulation protection plate 43.

[0039] In this embodiment, the first insulating protection plate 42 and the second insulating protection plate 43 are connected by a connecting plate 41 , and the second insulating protection plate 43 is provided with a through hole 46 for the electrode terminal 22 of the output pole connector 2 to pass through. The electrode terminal 22 of the output pole connector 2 passes through the through hole 46 .

[0040] In this embodiment, the connecting plate 41 is bridged and fixed at the ends of the first insulating protective plate 42 and the second insulating protective plate 43. The first insulating protective plate 42, the second insulating protective plate 43 and the connecting plate 41 are integrally formed to form an insulating protective member 4. The first insulating protective plate 42 is arranged parallel to the metal component 6. The first insulating protective plate 42 is a composite plate structure of an insulating plate and a metal plate. The metal plate 44 is arranged on one side of the board surface of the first insulating protective plate 42 close to the output pole connector 2. For example, a groove is provided on the board surface of the first insulating protective plate 42, and the metal plate 44 is bonded and fixed in the groove. The board surface of the metal plate 44 close to the output pole connector and the board surface of the insulating plate close to the output pole connector are in the same plane.

[0041] The connecting plate 41 is provided with a bolt hole, and the second insulating protective plate 43 is provided with a recessed structure 45 corresponding to the bolt hole. The recessed structure 45 leaves installation space for the bolts. An L-shaped bracket 7 is provided on the inner wall of the box body 1, and the insulating protective member 4 is fixed to the bracket 7 by bolts.

[0042] When the part of the power battery box where the output pole connector 2 is installed is hit or squeezed, in the first stage of the squeezing process, the box body 1 of the power battery box is deformed, and the output pole connector 2 on the box body 1 is also subjected to an inward force. The electrode terminal 22 of the output pole connector 2 moves inward as a whole with the insulating protective part 4 until the first insulating protective plate 42 contacts the metal component 6. Since the metal component 6 is fixed, it can withstand a large force without relative displacement. The first insulating protective plate 42 plays an insulating shielding role to prevent the electrode terminal 22 of the connector from contacting the metal component 6 and causing a short circuit. In the second stage of the extrusion process, when the extrusion pressure outside the box body 1 continues to increase, the internal structure of the connector body 21 changes, and the electrode terminal 22 of the output pole connector 2 moves outward in the opposite direction. A part of the electrode terminal 22 of the output pole connector 2 shrinks and enters the structure of the connector body 21, which is the PIN withdrawal phenomenon. Then, the mounting and fastening structure on the electrode terminal 22 contacts the second insulating protective plate 43, and moves outward with the second insulating protective plate 43 until it contacts the battery box wall. The second insulating protective plate 43 plays an insulating shielding role to prevent the electrode terminal 22 of the output pole connector 2 from contacting the box wall of the power battery box and causing a short circuit.

[0043] When the second insulating protection plate 43 contacts the wall of the power battery box and cannot continue to move outward, and the extrusion pressure on the outside of the battery box continues to increase, this is the third stage of the extrusion process. At this time, the electrode terminal 22 of the output pole connector 2 moves inward with the insulating protection part 4, and the first insulating protection plate 42 plays the role of insulating shielding again. Since the first insulating protection plate 42 adopts a high-strength insulating material and metal composite structure, the extrusion resistance of the first insulating protection plate 42 is enhanced, thereby avoiding the first insulating protection plate 42 from breaking during the extrusion process and the electrode terminal 22 of the output pole connector 2 contacting and short-circuiting with the metal component 6.

[0044] Embodiment 2 of the insulation protection structure of the power battery box of the present invention is different from Embodiment 1 in that the two ends of the connecting plate 41 are respectively connected to the plate surfaces of the first insulation protection plate 42 and the second insulation protection plate 43, and a connecting bolt hole is provided on the second insulation protection plate 43 and fixedly connected to the bracket 7.

[0045] Embodiment 3 of the insulation protection structure of the power battery box of the present invention is different from Embodiment 1 in that no bracket 7 is provided on the box wall of the box body 1 , and the second insulation protection plate 43 is welded to the inner wall of the box body 1 .

[0046] Embodiment 4 of the insulation protection structure of the power battery box of the present invention is different from Embodiment 1 in that two insulation protection plates are respectively fixed on the box wall of the box body 1 and the metal component 6. For example, the two insulation protection plates are respectively glued to the box wall of the box body 1 and the metal component 6.

[0047] Embodiment 5 of the insulation protection structure of the power battery box of the present invention is different from Embodiment 1 in that the connecting plate 41 and the first insulation protection plate 42 are arranged vertically.

[0048] An embodiment of a new energy vehicle of the present invention comprises an insulating protection structure of a power battery box. The insulating protection structure of the power battery box has the same structure as any embodiment of the insulating protection structure of the power battery box of the present invention described above, and will not be described again.

Claims

1. The insulation protection structure of the power battery box includes a box body, and an output pole connector is provided on the box wall of the box body, characterized in that: A metal component is fixed inside the box body, and two insulating protective plates are arranged at intervals between the box wall and the metal component. A through hole is provided on the insulating protective plate close to the box wall for the electrode terminal of the output pole connector to pass through, and the electrode terminal of the output pole connector extends into the interval between the two insulating protective plates through the through hole, and a mounting and fastening structure is provided at the end of the electrode terminal; the two insulating protective plates are connected by a connecting plate, and the connecting plate is fixed on the ends of the two insulating protective plates by bridging, and a groove is provided on the insulating protective plate away from the box wall, and the insulating protective plate close to the metal component is a composite plate structure of an insulating plate and a metal plate, and the metal plate is fixed in the groove, and the plate surface of the metal plate close to the output pole connector and the plate surface of the insulating plate close to the output pole connector are in the same plane, and the metal plate is arranged on the side of the electrode terminal of the insulating protective plate close to the output pole connector, and the electrode terminal is a PIN-retractable terminal.

2. The insulation protection structure of the power battery box according to claim 1, characterized in that: The two insulating protection plates and the connecting plate are formed in one piece.

3. The insulation protection structure of the power battery box according to claim 1, characterized in that: At least one of the two insulating protection plates and the connecting plate is fixedly connected to a box wall or a metal component of the box body.

4. The insulation protection structure of the power battery box according to claim 3, characterized in that: The connecting plate is provided with bolt holes, the insulating protection plate close to the box wall is provided with a recessed structure corresponding to the bolt holes, the box wall of the box is provided with an L-shaped bracket, and the connecting plate is fixedly connected to the horizontal part of the L-shaped bracket by bolts.

5. The insulation protection structure of the power battery box according to claim 1 or 2, characterized in that: The insulating protection plate close to the metal component is arranged parallel to the metal component.

6. A new energy vehicle, comprising an insulation protection structure of a power battery box, wherein the insulation protection structure of the power battery box comprises a box body, and an output pole connector is provided on the box wall of the box body, characterized in that: A metal component is fixed inside the box body, and two insulating protective plates are arranged at intervals between the box wall and the metal component. A through hole is provided on the insulating protective plate close to the box wall for the electrode terminal of the output pole connector to pass through, and the electrode terminal of the output pole connector extends into the interval between the two insulating protective plates through the through hole, and a mounting and fastening structure is provided at the end of the electrode terminal; the two insulating protective plates are connected by a connecting plate, and the connecting plate is fixed on the ends of the two insulating protective plates by bridging, and a groove is provided on the insulating protective plate away from the box wall, and the insulating protective plate close to the metal component is a composite plate structure of an insulating plate and a metal plate, and the metal plate is fixed in the groove, and the plate surface of the metal plate close to the output pole connector and the plate surface of the insulating plate close to the output pole connector are in the same plane, and the metal plate is arranged on the side of the electrode terminal of the insulating protective plate close to the output pole connector, and the electrode terminal is a PIN-retractable terminal.

7. The new energy vehicle according to claim 6, characterized in that: The two insulating protection plates and the connecting plate are formed in one piece.

8. The new energy vehicle according to claim 6, characterized in that: At least one of the two insulating protection plates and the connecting plate is fixedly connected to a box wall or a metal component of the box body.

9. The new energy vehicle according to claim 8, characterized in that: The connecting plate is provided with bolt holes, the insulating protection plate close to the box wall is provided with a recessed structure corresponding to the bolt holes, the box wall of the box is provided with an L-shaped bracket, and the connecting plate is fixedly connected to the horizontal part of the L-shaped bracket by bolts.

10. The new energy vehicle according to claim 6, characterized in that: The insulating protection plate close to the metal component is arranged parallel to the metal component.

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