CN214898688U - Battery protection device - Google Patents

Abstract

The utility model discloses a battery protection device, include: the bottom shell is provided with a first mounting groove, a second mounting groove, a third mounting groove, a fourth mounting groove and a fifth mounting groove, and is respectively provided with a pre-charging resistor, a main negative relay, a current sensor, a pre-charging relay and a main positive relay, wherein the second mounting groove, the third mounting groove, the fourth mounting groove and the fifth mounting groove are respectively and closely adjacent to four corners of the bottom shell; the low-voltage communication plug connector, the high-voltage sampling plug connector and the top cover are all arranged on the bottom shell; the top cover is provided with a first plug hole and a second plug hole; the detachable structure, detachable structure include the cardboard and with cardboard complex card protruding. The utility model discloses a set up main negative relay, current sensor, pre-charge relay, main positive relay next-door neighbour's four turnings of drain pan respectively, make full use of the corner space of drain pan, improve the internal space utilization of battery protection device; through setting up detachable construction, install top cap and drain pan fast, improve the packaging efficiency.

Description

Battery protection device

Technical Field

The utility model belongs to the technical field of battery protection equipment and specifically relates to a battery protection device is related to.

Background

Currently, with the continuous increase of resource and environmental pressure, new energy vehicles represented by electric vehicles have become an important direction for the development of the automobile industry, and the electric vehicles have gradually opened the market and entered the lives of people. At present, a power battery system of a new energy automobile is the most critical part in the whole automobile parts and is also the part with the highest requirement on safety. With the continuous breakthrough of battery technology, the development of pure electric vehicles is an important strategy listed as new energy vehicles by the industry.

The BDU (battery cut-off unit) is used as a device for switching on and off the high-voltage power battery of the new energy automobile, plays a vital role in the safety of the battery pack, and is a more critical component of the new energy automobile.

However, the current BDU faces the following problems: the utilization rate of the internal space is low and the assembly is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a battery protection device, internally mounted is compact, and space utilization is higher, and each components and parts installation is more convenient.

According to the utility model discloses battery protection device, include: the bottom shell is provided with a first mounting groove, a second mounting groove, a third mounting groove, a fourth mounting groove and a fifth mounting groove, wherein the second mounting groove, the third mounting groove, the fourth mounting groove and the fifth mounting groove are respectively and closely adjacent to four corners of the bottom shell; the main negative relay is arranged on the second mounting groove; the current sensor is arranged on the third mounting groove; the pre-charging relay is arranged on the fourth mounting groove; the main positive relay is arranged on the fifth mounting groove; the pre-charging resistor is arranged on the first mounting groove; the low-voltage communication plug connector is arranged on the bottom shell; the high-voltage sampling plug connector is arranged on the bottom shell; the top cover is arranged on the bottom shell and is provided with a first plug hole and a second plug hole, the first plug hole corresponds to the low-voltage communication plug connector, and the second plug hole corresponds to the high-voltage sampling plug connector; the detachable structure comprises a clamping plate and a clamping protrusion matched with the clamping plate, the clamping plate is arranged on the top cover, a groove is formed in the bottom shell, the clamping protrusion is arranged on the groove, two opposite sides of the clamping plate can be abutted against the groove, and the thickness of the clamping plate is equal to the depth of the groove.

According to the battery protection device provided by the embodiment of the utility model, the main negative relay, the current sensor, the pre-charging relay and the main positive relay can be respectively arranged close to the four corners of the bottom shell by arranging the first mounting groove, the second mounting groove, the third mounting groove, the fourth mounting groove and the fifth mounting groove which are arranged close to the four corners on the bottom shell, so that the corner space of the bottom shell is fully utilized, the middle space is reserved, the wiring is convenient, and the utilization rate of the internal space of the battery protection device is improved; and through setting up detachable construction, install top cap and drain pan fast, improve the packaging efficiency.

In some embodiments, the second mounting groove and the fifth mounting groove have the same structure, the second mounting groove includes a second main groove and two second auxiliary grooves, two of the second auxiliary grooves are disposed at two ends of a diagonal line of the second main groove, one side wall of two side walls of each of the second auxiliary grooves is flush with the second main groove, the other side wall of the two side walls of each of the second auxiliary grooves is in arc transition connection with the second main groove, and each of the second auxiliary grooves is provided with a second mounting hole.

In some embodiments, the fourth mounting groove includes a fourth main groove and two fourth auxiliary grooves, the two fourth auxiliary grooves are disposed at two ends of the fourth mounting groove in the length direction, each fourth auxiliary groove is trapezoidal and is in arc transition connection with the fourth main groove, and a fourth mounting hole is disposed on the fourth auxiliary groove.

In some embodiments, the second mounting groove and the fourth mounting groove are respectively disposed adjacent to both long sides of the first mounting groove.

In some embodiments, the fourth mounting groove and the fifth mounting groove are disposed on the same side of the first mounting groove, the battery protection device further includes a third limiting seat, the third limiting seat is disposed between the fourth mounting groove and the fifth mounting groove, and opposite sides of the low-voltage communication plug are respectively abutted to the third limiting seat and the side wall of the bottom case.

In some embodiments, the third mounting groove is disposed at an end of the first mounting groove far away from the second mounting groove, the third mounting groove is disposed near the fifth mounting groove, a third wire passing space is defined between the third mounting groove and the first mounting groove, and a wire passing groove is disposed between the third mounting groove and the fifth mounting groove.

In some embodiments, two sets of U-shaped mounting seats are disposed on the bottom case, and the two sets of mounting seats jointly define the first mounting groove.

In some embodiments, the battery protection device further comprises: the first limiting seat is arranged between the third mounting groove and the bottom shell; the spacing seat of second, the spacing seat of second is established the third mounting groove with between the second mounting groove, wherein an adjacent both sides of high pressure sampling plug connector end respectively support first spacing seat with on the spacing seat of second.

In some embodiments, the battery protection device further comprises: the battery positive end, the battery negative end, the output positive end and the output negative end are arranged on the bottom shell; one end of the first copper bar is connected with the positive electrode end of the positive electrode, and the other end of the first copper bar is connected with the main positive relay; one end of the second copper bar is connected with the output positive terminal, and the other end of the second copper bar is connected with the main positive relay; one end of the third copper bar is connected with the negative electrode end of the battery, and the other end of the third copper bar is connected with the main negative relay; one end of the fourth copper bar is connected with the output negative electrode end, and the other end of the fourth copper bar is connected with the main negative relay.

In some embodiments, the battery protection device further comprises: the first pole seat is arranged on the bottom shell, and the output positive pole end and the output negative pole end are arranged on the first pole seat; the first pole cover is clamped and matched on the first pole seat; the second pole seat is arranged on the bottom shell, and the positive pole end of the battery is arranged on the second pole seat; the second pole cover is clamped and matched on the second pole seat; the third pole seat is arranged on the bottom shell, and the positive pole end of the battery is arranged on the third pole seat; and the third pole cover is clamped and matched on the third pole base.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a battery protection device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a bottom case in an embodiment of the present invention;

fig. 3 is a first schematic diagram of the internal wiring of the battery protection device according to the embodiment of the present invention;

fig. 4 is a schematic diagram of internal wiring of the battery protection device according to the embodiment of the present invention;

fig. 5 is a top view of the bottom case in the embodiment of the present invention.

Reference numerals:

100. a battery protection device;

10. a bottom case;

11. a first mounting groove; 12. a second mounting groove; 121. a second main groove; 122. a second sub-tank; 1221. a second mounting hole; 13. a third mounting groove; 14. a fourth mounting groove; 141. a fourth main groove; 142. a fourth sub-tank; 1421. a fourth mounting hole; 15. a fifth mounting groove; 151. a fifth main tank; 152. a fifth sub-tank; 1521. a fifth mounting hole; 16. a groove; 17. a mounting seat; 171. an L-shaped plate; 172. a first clamping plate; 173. a second clamping plate; 174. an abutting piece;

21. a main negative relay; 22. a current sensor; 23. a pre-charging relay; 24. a main positive relay; 25. pre-charging a resistor; 26. a low voltage communication connector; 27. a high-voltage sampling plug connector;

30. a top cover; 301. a first plug hole; 302. a second plug hole;

41. clamping a plate; 42. clamping convex;

51. a third limiting seat; 52. a first limiting seat; 53. a second limiting seat;

61. a battery positive terminal; 62. a battery negative terminal; 63. an output positive terminal; 64. an output negative terminal;

71. a first copper bar; 72. a second copper bar; 73. a third copper bar; 74. a fourth copper bar;

81. a first pole mount; 82. a first pole cap; 83. a second pole mount; 84. a second pole cap; 85. a third pole mount; 86. a third pole cover;

91. a wiring seat; 911. wiring holes; 92. a wiring ring;

003. a first wire passing space; 004. a second wire passing space; 001. a third wire passing space; 002. and a wire passing groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following describes a battery protection device 100 according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 1 and fig. 2, a battery protection device 100 according to an embodiment of the present invention includes: bottom shell 10, main negative relay 21, current sensor 22, pre-charge relay 23, main positive relay 24, pre-charge resistor 25, low-voltage communication plug 26, high-voltage sampling plug 27 and top cover 30.

The bottom chassis 10 has a first mounting groove 11, a second mounting groove 12, a third mounting groove 13, a fourth mounting groove 14, and a fifth mounting groove 15, wherein the second mounting groove 12, the third mounting groove 13, the fourth mounting groove 14, and the fifth mounting groove 15 are respectively disposed adjacent to four corners of the bottom chassis 10.

The main negative relay 21 is provided on the second mounting groove 12. The current sensor 22 is provided on the third mounting groove 13. The precharge relay 23 is provided on the fourth mounting groove 14. A main positive relay 24 is provided on the fifth mounting groove 15. The pre-charging resistor 25 is disposed on the first mounting groove 11. It can be understood that, by respectively disposing the main negative relay 21, the current sensor 22, the pre-charge relay 23, and the main positive relay 24 adjacent to the four corners of the bottom case 10, the corner space of the bottom case 10 is fully utilized, the internal wiring is facilitated, and the internal space utilization rate of the battery protection device 100 is improved.

A low voltage communication connector 26 is provided on the base housing 10 and a high voltage sampling connector 27 is provided on the base housing 10. Top cap 30 is established on drain pan 10, and top cap 30 has first spliced eye 301 and second spliced eye 302, and first spliced eye 301 corresponds low pressure communication plug connector 26 to insert low pressure communication plug connector 26 with the cooperation end of low pressure communication plug connector 26 through first spliced eye 301 on, second spliced eye 302 corresponds high pressure sampling plug connector 27, inserts high pressure sampling plug connector 27 with the cooperation end of high pressure sampling plug connector 27 through second spliced eye 302 on.

The detachable structure (not shown) includes a clamping plate 41 and a clamping protrusion 42 engaged with the clamping plate 41, the clamping plate 41 is disposed on the top cover 30, the bottom cover 10 is provided with a groove 16, the clamping protrusion 42 is disposed on the groove 16, two opposite sides of the clamping plate 41 can be stopped against the groove 16, and the thickness of the clamping plate 41 is equal to the depth of the groove 16. It can be understood that, can realize dismantling of top cover 30 and drain pan 10 through cardboard 41 cooperation card protruding 42, simple to operate and simple, when top cover 30 is connected fixedly with drain pan 10 simultaneously, the relative both sides of cardboard 41 end up on recess 16, the surface of cardboard 41 and the surface of drain pan 10 are in a plane, and the outward appearance is pleasing to the eye and smooth-going, and can also play the effect of protection cardboard 41 and card protruding 42, the life-span of extension detachable construction.

It is worth to explain that, one end of pre-charge resistance 25 passes through the pencil and connects pre-charge relay 23, and the other end of pre-charge resistance 25 passes through the pencil and connects main negative relay 21, and current sensor 22 passes through the pencil and connects low pressure communication plug connector 26, and pre-charge relay 23 passes through the pencil and connects low pressure communication plug connector 26, and two outputs of main negative relay 21 pass through the pencil and connect high pressure sampling plug connector 27, and main negative relay 21 passes through the pencil and connects low pressure communication plug connector 26, and two outputs of main positive relay 24 pass through the pencil and connect high pressure sampling plug connector 27.

According to the battery protection device 100 provided by the embodiment of the present invention, the bottom case 10 is provided with the first mounting groove 11, the second mounting groove 12, the third mounting groove 13, the fourth mounting groove 14 and the fifth mounting groove 15 which are arranged adjacent to four corners, so that the main negative relay 21, the current sensor 22, the pre-charge relay 23 and the main positive relay 24 can be respectively arranged adjacent to four corners of the bottom case 10, and the corner space of the bottom case 10 is fully utilized, thereby leaving the middle space for convenient wiring and improving the internal space utilization rate of the battery protection device 100; and through setting up removable structure, install top cap 30 and drain pan 10 fast, improve the packaging efficiency.

As shown in fig. 2, in some embodiments, the second installation groove 12 and the fifth installation groove 15 have the same structure, the second installation groove 12 includes a second main groove 121 and two second auxiliary grooves 122, the two second auxiliary grooves 122 are disposed at two ends of a diagonal line of the second main groove 121, one side wall of two side walls of each second auxiliary groove 122 is flush with the second main groove 121, the other side wall of each second auxiliary groove 122 is in arc transition connection with the second main groove 121, and a second installation hole 1221 is disposed on each second auxiliary groove 122. It is understood that two second auxiliary grooves 122 arranged on a diagonal line can be used for placing two mounting feet of the main negative relay 21, and then bolts on the mounting feet are assembled on the second mounting holes 1221. And one side wall of the two side walls of the second auxiliary groove 122 is flush with the second main groove 121, and the other side wall is in arc transition connection with the second main groove 121, so that when the main negative relay 21 is installed, the installation pin of the main negative relay 21 can move into the second auxiliary groove 122 along the side wall of the second main groove 121, and the installation of the installation pin is facilitated.

As shown in fig. 2, in some embodiments, the fourth mounting groove 14 includes a fourth main groove 141 and two fourth auxiliary grooves 142, the two fourth auxiliary grooves 142 are disposed at two ends of the fourth mounting groove 14 in the length direction, each fourth auxiliary groove 142 is trapezoidal and is in arc transition connection with the fourth main groove 141, and a fourth mounting hole 1421 is disposed on the fourth auxiliary groove 142. It is understood that two mounting legs of the pre-charge relay 23 can be placed through the two fourth sub grooves 142 provided at both ends in the length direction, and then the bolts on the mounting legs are fitted into the fourth mounting holes 1421. The fourth auxiliary groove 142 is trapezoidal and is in arc transitional connection with the fourth main groove 141, so that the mounting feet on any side of the pre-charging relay 23 can enter the fourth auxiliary groove 142 along the trapezoidal side no matter which direction the mounting feet are arranged, and the pre-charging relay 23 is convenient to assemble.

As shown in fig. 2, in some embodiments, the second installation groove 12 and the fourth installation groove 14 are respectively disposed adjacent to two long sides of the first installation groove 11, so that a compact layout and space saving can be achieved.

As shown in FIG. 2, in some embodiments, the distance between the second mounting groove 12 and the fourth mounting groove 14 is 40mm to 50 mm. That is, the distance between the second mounting groove 12 and the fourth mounting groove 14 may be 40mm, 45mm, 50mm, for example, the distance between the second mounting groove 12 and the fourth mounting groove 14 is 45 mm.

As shown in fig. 2, in some embodiments, the fourth installation groove 14 and the fifth installation groove 15 are disposed on the same side of the first installation groove 11, the battery protection device 100 further includes a third limiting seat 51, the third limiting seat 51 is disposed between the fourth installation groove 14 and the fifth installation groove 15, and two opposite sides of the low-voltage communication plug 26 respectively abut against the third limiting seat 51 and the side wall of the bottom case 10. Specifically, the fifth mounting groove 15 is disposed in front of the fourth mounting groove 14, the left of the fifth mounting groove 15 and the fourth mounting groove 14 is the side wall of the bottom case 10, the third limiting seat 51 is disposed between the fourth mounting groove 14 and the fifth mounting groove 15, a certain space is defined between the third limiting seat 51 and the side wall of the bottom case 10, the low-voltage communication plug connector 26 is disposed in the space, that is, the front side of the low-voltage communication plug connector 26 is only abutted against the main positive relay 24, the rear side is only abutted against the pre-charge relay 23, the left side is only abutted against the side wall of the bottom case 10, and the right side is only abutted against the third limiting seat 51, so that the fixation of the low-voltage communication plug connector 26 can be realized, and the low-voltage communication plug connector 26 is simple and convenient to assemble and disassemble.

As shown in fig. 2, in some embodiments, the distance between the fourth mounting groove 14 and the fifth mounting groove 15 is 15mm to 25 mm. That is, the distance between the fourth mounting groove 14 and the fifth mounting groove 15 may be 15mm, 17mm, 19mm, 21mm, 23mm, 25mm, for example, the distance between the fourth mounting groove 14 and the fifth mounting groove 15 is 20 mm. Wherein, the fourth mounting groove 14 and the fifth mounting groove 15 may be disposed at the left side of the first mounting groove 11, and the fourth mounting groove 14 may be located at the rear of the fifth mounting groove 15.

As shown in fig. 2 and 5, in some embodiments, the third mounting groove 13 is disposed at an end of the first mounting groove 11 far from the second mounting groove 12, the third mounting groove 13 is disposed near the fifth mounting groove 15, a third wire passing space 001 is defined between the third mounting groove 13 and the first mounting groove 11, and a wire passing groove 002 is disposed between the third mounting groove 13 and the fifth mounting groove 15. That is, by defining the third wire passing space 001 between the third mounting groove 13 and the first mounting groove 11, each wire harness may be arranged in the third wire passing space 001 such that the wire harness is located between the current sensor 22 and the pre-charging resistor 25. And by providing the wire passing groove 002 between the third mounting groove 13 and the fifth mounting groove 15, the wire harness can be arranged in the wire passing groove 002, for example, the wire harness on the main relay 24 is arranged in the wire passing groove 002. Through setting up third line space 001 and crossing wire casing 002, the space in the bottom shell 10 can be fully utilized, realizes arranging in order of pencil.

As shown in fig. 1 and fig. 5, in a specific implementation, the current sensor 22 is connected to the main positive relay 24, the pre-charging resistor 25, and the low-voltage communication plug 26 through wires, and the wire passes through the third wire passing space 001, and a predetermined placing space is set for the wire through the third wire passing space 001, so that the wire is gathered, and the regularity of the internal wire is improved. Similarly, the wire passing groove 002 also improves the uniformity of the internal wires.

As shown in fig. 2, in some embodiments, the distance between the third mounting groove 13 and the first mounting groove 11 is 10mm to 16mm, and the distance between the third mounting groove 13 and the fifth mounting groove 15 is 10mm to 13 mm. That is, the distance between the third mounting groove 13 and the first mounting groove 11 may be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, and the distance between the third mounting groove 13 and the fifth mounting groove 15 may be 10mm, 11mm, 12mm, 13 mm. Specifically, for example, the second mounting groove 12 is provided at the right of the first mounting groove 11, the third mounting groove 13 is provided at the front of the second mounting groove 12 and the first mounting groove 11, a distance between the third mounting groove 13 and the first mounting groove 11 is 13mm, the fifth mounting groove 15 is provided at the left of the first mounting groove 11, and a distance between the third mounting groove 13 and the fifth mounting groove 15 is 12 mm. Of course, the distance between the third mounting groove 13 and the first mounting groove 11 may also be 10mm and 16mm, and the distance between the third mounting groove 13 and the fifth mounting groove 15 may also be 10mm and 13mm, which is not described herein again.

In some embodiments, as shown in fig. 2, two sets of U-shaped mounting seats 17 are provided on the bottom case 10, and the two sets of mounting seats 17 together define the first mounting groove 11. That is to say, the first mounting groove 11 is not directly opened on the bottom shell 10, but is defined by two sets of U-shaped mounting seats 17, the pre-charging resistor 25 can be directly placed between the two sets of U-shaped mounting seats 17 to be assembled, and since the mounting seats 17 are located on the bottom shell 10, the pre-charging resistor 25 can be conveniently mounted and dismounted through the gap between the two sets of mounting seats 17.

As shown in FIG. 2, in some embodiments, the groove depth of the first mounting groove 11 is 18mm to 28mm, that is, the groove depth of the first mounting groove 11 may be 18mm, 20mm, 22mm, 24mm, 26mm, 28 mm. For example, the depth of the first mounting groove 11 is 23mm, at which the mounting of the pre-charging resistor 25 on the first mounting groove 11 is reliable and stable. Of course, the depth of the first mounting groove 11 can also be 18mm, 28mm, which is not described herein.

As shown in fig. 2, in some embodiments, the second mounting groove 12 and the fifth mounting groove 15 have the same groove depth, and the groove depth of the fifth mounting groove 15 is 10mm to 15 mm. That is, the second mounting groove 12 and the fifth mounting groove 15 may have groove depths of 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, within which more stable and reliable mounting of the main negative relay 21 and the main positive relay 24 may be ensured, for example, the fifth mounting groove 15 may have a groove depth of 12mm and the second mounting groove 12 may have a groove depth of 12 mm. Of course, the depth of the fifth installation groove 15 can also be 10mm, and the depth of the second installation groove 12 is 10 mm; or the depth of the fifth mounting groove 15 is 15mm, and the depth of the second mounting groove 12 is 15 mm.

As shown in fig. 2, in some embodiments, the battery protection device 100 further includes: a first stopper seat 52 and a second stopper seat 53. The first stopper 52 is disposed between the third mounting groove 13 and the bottom case 10. The second limit seat 53 is disposed between the third installation groove 13 and the second installation groove 12, wherein two adjacent sides of the high-voltage sampling plug connector 27 respectively abut against the first limit seat 52 and the second limit seat 53. For example, the right side of the third mounting groove 13 is a side wall of the bottom case 10, a first limit seat 52 is disposed between the third mounting groove 13 and the side wall of the bottom case 10, the second mounting groove 12 is disposed behind the third mounting groove 13, and a second limit seat 53 is disposed between the third mounting groove 13 and the second mounting groove 12, so that the front side of the high-voltage sampling plug connector 27 can be abutted against the first limit seat 52, the rear side can be abutted against the main negative relay 21, the left side can be abutted against the second limit seat 53, and the right side can be abutted against the side wall of the bottom case 10, thereby fixing the high-voltage sampling plug connector 27 can be realized, and the high-voltage sampling plug connector 27 can be easily and conveniently mounted and dismounted.

As shown in fig. 1 and 3, in some embodiments, the battery protection device 100 further includes: the battery comprises a battery positive terminal 61, a battery negative terminal 62, an output positive terminal 63, an output negative terminal 64, a first copper bar 71, a second copper bar 72, a third copper bar 73 and a fourth copper bar 74. A battery positive terminal 61, a battery negative terminal 62, an output positive terminal 63, and an output negative terminal 64 are provided on the bottom case 10. One end of the first copper bar 71 is connected with the battery positive terminal 61 and the other end is connected with the main positive relay 24. One end of the second copper bar 72 is connected with the output positive terminal 63, and the other end is connected with the main positive relay 24. One end of the third copper bar 73 is connected with the battery negative electrode end 62 and the other end is connected with the main negative relay 21. One end of the fourth copper bar 74 is connected with the negative output terminal 64 and the other end is connected with the main negative relay 21. That is to say, one end of the main positive relay 24 is connected to the battery positive terminal 61 through the first copper bar 71, the other end of the main positive relay 24 is connected to the output positive terminal 63 through the second copper bar 72, and the battery positive terminal 61, the first copper bar 71, the main positive relay 24, the second copper bar 72 and the output positive terminal 63 form a main positive loop of the BDU. One end of the main negative relay 21 is connected with the battery negative end 62 through a third copper bar 73, the other end of the main negative relay 21 is connected with the output negative end 64 through a fourth copper bar 74, and the battery negative end 62, the third copper bar 73, the main negative relay 21, the fourth copper bar 74 and the output negative end 64 form a main negative loop of the BDU.

As shown in fig. 1, in some embodiments, the battery protection device 100 further includes: a first pole holder 81, a first pole cover 82, a second pole holder 83, a second pole cover 84, a third pole holder 85, and a third pole cover 86.

The first pole holder 81 is provided on the bottom case 10, and the output positive terminal 63 and the output negative terminal 64 are provided on the first pole holder 81. The first pole cover 82 is snap-fitted on the first pole mount 81. Specifically, when the external device is connected to the output positive terminal 63 and the output negative terminal 64, the first pole cover 82 is only required to be removed from the first pole holder 81 for connection, when the connection between the external device and the battery protection device 100 is required to be cancelled, the first pole cover 82 is removed for disassembly, and the first pole holder 81 is clamped and matched with the first pole holder 82 to improve the connection stability between the external device and the battery protection device 100. The second pole seat 83 is disposed on the bottom case 10, and the battery positive terminal 61 is disposed on the second pole seat 83. Second pole cap 84 is snap fit onto second pole mount 83. The third electrode holder 85 is disposed on the bottom case 10, and the battery positive terminal 61 is disposed on the third electrode holder 85. The third pole cover 86 is snap-fitted to the third pole mount 85. It is understood that the connection and separation of the second pole cover 84 and the second pole holder 83 are similar to the connection and separation of the first pole cover 82 and the first pole holder 81, and the connection and separation of the third pole cover 86 and the third pole holder 85 are similar to the connection and separation of the first pole cover 82 and the first pole holder 81, and are not described herein again.

As shown in fig. 2, in some embodiments, the third mounting groove 13 is adjacent to a short side of the bottom chassis 10, and the third mounting groove 13 extends in a width direction of the bottom chassis 10. For example, the short sides of the bottom case 10 are the sides extending in the left-right direction, the third mounting groove 13 is disposed at a position of the bottom case 10 near the front, and the third mounting groove 13 extends in the left-right direction, so that the internal layout of the bottom case 10 can be compact and the space can be saved.

As shown in fig. 1 and 5, in some embodiments, a first wire passing space 003 is defined between the fifth mounting groove 15 and an adjacent sidewall of the bottom case 10, and a second wire passing space 004 is defined between the fifth mounting groove 15 and another adjacent sidewall of the bottom case 10. Specifically, for example, a first wire passing space 003 is defined between the left side of the fifth mounting groove 15 and the left side wall of the bottom case 10, a second wire passing space 004 is defined between the front side of the fifth mounting groove 15 and the front side wall of the bottom case 10, the wiring harness connected with the low-voltage communication connector 26, the current sensor 22 and the main/negative relay 21 is arranged through the first wire passing space 003 and the second wire passing space 004, so that the orderly arrangement of the wiring harness inside the bottom case 10 can be realized, the wiring harness is accommodated, the regularity is improved, the internal space of the battery protection device 100 is fully utilized, and the space utilization rate is improved.

As shown in fig. 2, in some embodiments, the mount 17 includes two L-shaped plates 171, with a gap between the two L-shaped plates 171; a first clamping plate 172 is arranged between the two mounting seats 17 to be clamped into one side part of the pre-charging resistor 25; a second clamping plate 173 is arranged between the gaps between the two L-shaped plates 171 to clamp the other side part of the pre-charging resistor 25; the bottom of the accommodating space is provided with an abutting member 174 for elastically abutting against the pre-charging resistor 25. For example, the two mounting seats 17 are arranged in the front-rear direction of the bottom case 10, the first catch plate 172 is arranged between the two L-shaped plates 171 in the left-right direction, and the first catch plate 172 catches the front and rear side portions of the pre-charging resistor 25 when the pre-charging resistor 25 is placed on the bottom case 10; in the front-rear direction, a second catch plate 173 is arranged between the two L-shaped plates 171, and when the pre-charging resistor 25 is placed on the bottom case 10, the second catch plate 173 is clamped on the left and right sides of the pre-charging resistor 25; be equipped with two holding pieces 174 on bottom shell 10, holding piece 174 supports pre-charge resistance 25 and tightly supports on first cardboard 172, second cardboard 173 when pre-charge resistance 25 places on bottom shell 10, block the front and back both sides portion of pre-charge resistance 25 through first cardboard 172, through the left and right sides portion of second cardboard 173 chucking pre-charge resistance 25, further improve pre-charge resistance 25 and first cardboard 172, the stability of being connected between the second cardboard 173 through holding piece 174, thereby fix pre-charge resistance 25 on bottom shell 10, increase the stability of pre-charge resistance 25.

As shown in fig. 2 and 5, in some embodiments, the battery protection apparatus 100 further includes: wiring seat 91, wiring ring 92. Be equipped with wiring seat 91 between first mounting groove 11 and the fourth mounting groove 14, be equipped with wiring hole 911 on the wiring seat 91, wiring hole 911 is used for installing the pencil, and it can be understood that the pencil of connecting between pre-charge relay 23, main positive relay 24, pre-charge resistance 25 can be fixed on wiring hole 911 of wiring seat 91 to conveniently fix the pencil, and make the pencil arrange neatly. Wiring rings 92 are provided on the inner side wall of the bottom case 10, the wiring rings 92 are used to mount the wire harnesses, for example, wiring rings 92 are provided on the front and rear sides of the bottom case 10, the wiring ring 92 on the front side can fix part of the wire harnesses of the main positive relay 24, and the wiring ring 92 on the rear side can fix part of the wire harnesses of the pre-charge relay 23 and the pre-charge resistor 25. Through this mode, can avoid drain pan 10 internal wiring confusion and the trouble problem of later maintenance, through wiring hole 911, wiring ring 92 restraint pencil, concentrate many pencil, improve the regularity of battery protection device 100 inner space.

As shown in fig. 2, in some embodiments, the fifth installation groove 15 includes a fifth main groove 151 and two fifth auxiliary grooves 152, the two fifth auxiliary grooves 152 are disposed at two ends of a diagonal line of the fifth main groove 151, one side wall of two side walls of each fifth auxiliary groove 152 is flush with the fifth main groove 151, and the other side wall is in arc transition connection with the fifth main groove 151, and a fifth installation hole 1521 is disposed on each fifth auxiliary groove 152. It is understood that two diagonal fifth auxiliary slots 152 are used to place two mounting feet of the main positive relay 24, and then bolts on the mounting feet are assembled on the fifth mounting holes 1521. And one side wall of the two side walls of the fifth auxiliary groove 152 is flush with the fifth main groove 151, and the other side wall is in arc transition connection with the fifth main groove 151, so that when the main positive relay 24 is installed, the installation foot of the main positive relay 24 can move into the fifth auxiliary groove 152 along the side wall of the fifth main groove 151, and the installation of the installation foot is convenient.

A specific embodiment of the battery protection device 100 of the present invention will be described below with reference to fig. 1 to 5.

A battery protection device 100 comprising: bottom shell 10, main negative relay 21, current sensor 22, pre-charge relay 23, main positive relay 24, pre-charge resistor 25, third spacing seat 51, low-voltage communication plug connector 26, first spacing seat 52, second spacing seat 53, high-voltage sampling plug connector 27, top cap 30, detachable structure, battery positive terminal 61, battery negative terminal 62, output positive terminal 63, output negative terminal 64, first copper bar 71, second copper bar 72, third copper bar 73, fourth copper bar 74, first polar seat 81, first polar cover 82, second polar seat 83, second polar cover 84, third polar seat 85, third polar cover 86, wiring seat 91, wiring ring 92.

The bottom shell 10 is provided with a first mounting groove 11, a second mounting groove 12, a third mounting groove 13, a fourth mounting groove 14, a fifth mounting groove 15, a groove 16 and a mounting seat 17.

Be equipped with two sets of mount pads 17 on the drain pan 10, arrange around two sets of mount pads 17, the drain pan 10 rear end is pressed close to a set of mount pad 17, every group mount pad 17 all is the U-shaped shape, mount pad 17 includes two L shaped plates 171, on left right direction, be equipped with first cardboard 172 between two L shaped plates 171, in the front and back direction, be equipped with second cardboard 173 between two L shaped plates 171, be equipped with two between two first cardboards 172 and support the piece 174, first mounting groove 11 is injectd jointly to two sets of mount pads 17.

Second mounting groove 12 is located the right-hand back corner of drain pan 10, second mounting groove 12 is located right-hand side of first mounting groove 11, the groove depth of second mounting groove 12 is 12mm, second mounting groove 12 includes second main groove 121 and two second auxiliary grooves 122, two second auxiliary grooves 122 are established at the both ends of the diagonal of second main groove 121, a second auxiliary groove 122 is located the left rear side of second main groove 121 promptly, another second auxiliary groove 122 is located the right front side of second main groove 121, a lateral wall and second main groove 121 parallel and level and another lateral wall and second main groove 121 circular arc transitional coupling in the both sides wall of every second auxiliary groove 122, be equipped with second mounting hole 1221 on every second auxiliary groove 122.

Third mounting groove 13 is located the right front corner of drain pan 10, and the place ahead of second mounting groove 12 is located to third mounting groove 13, and third mounting groove 13 is next to the short avris of drain pan 10, and third mounting groove 13 extends along the width direction of drain pan 10, and third mounting groove 13 extends along left right direction promptly, and the distance between third mounting groove 13 and first mounting groove 11 is 13 mm.

Fourth mounting groove 14 is located the left back corner of drain pan 10, the left of first mounting groove 11 is located to fourth mounting groove 14, the distance between fourth mounting groove 14 and second mounting groove 12 is 45mm, fourth mounting groove 14 includes fourth main slot 141 and two fourth auxiliary slots 142, two fourth auxiliary slots 142 are established at the length direction's of fourth mounting groove 14 both ends, two fourth auxiliary slots 142 are trapezoidal and with fourth main slot 141 circular arc transitional coupling, be equipped with fourth mounting hole 1421 on the fourth auxiliary slot 142.

Fifth mounting groove 15 is located the right front corner of drain pan 10, and left of first mounting groove 11 is located to fifth mounting groove 15, and the place ahead of fourth mounting groove 14 is located to fifth mounting groove 15, and the distance between fourth mounting groove 14 and fifth mounting groove 15 is 20mm, and simultaneously, left of third mounting groove 13 is located to fifth mounting groove 15, and the distance between fifth mounting groove 15 and third mounting groove 13 is 12mm, and the groove depth of fifth mounting groove 15 is 12 mm.

The main negative relay 21 is provided on the second mounting groove 12. The current sensor 22 is provided on the third mounting groove 13. The precharge relay 23 is provided on the fourth mounting groove 14. A main positive relay 24 is provided on the fifth mounting groove 15. The pre-charging resistor 25 is disposed on the first mounting groove 11. The third stopper seat 51 is disposed between the fourth mounting groove 14 and the fifth mounting groove 15. The left side of the low-voltage communication plug connector 26 abuts against the side wall of the bottom case 10, and the right side of the low-voltage communication plug connector 26 abuts against the third limiting seat 51. The first position-limiting seat 52 is disposed between the third mounting groove 13 and the sidewall of the bottom case 10, and the second position-limiting seat 53 is disposed between the third mounting groove 13 and the second mounting groove 12. The front side of the high-pressure sampling plug connector 27 abuts against the first limit seat 52, and the left side of the high-pressure sampling plug connector 27 abuts against the second limit seat 53.

The top cover 30 is disposed on the bottom housing 10, the top cover 30 has a first insertion hole 301 and a second insertion hole 302, the first insertion hole 301 corresponds to the low-voltage communication connector 26, and the second insertion hole 302 corresponds to the high-voltage sampling connector 27.

The detachable structure includes cardboard 41 and cardboard 41 complex card protruding 42, and cardboard 41 is established on top cover 30, is equipped with recess 16 on the drain pan 10, and card protruding 42 is established on recess 16, and the relative both sides of cardboard 41 can end to support on recess 16, and the thickness of cardboard 41 equals with the groove depth of recess 16.

A battery positive terminal 61, a battery negative terminal 62, an output positive terminal 63, and an output negative terminal 64 are provided on the bottom case 10. One end of the first copper bar 71 is connected with the battery positive terminal 61 and the other end is connected with the main positive relay 24. One end of the second copper bar 72 is connected with the output positive terminal 63, and the other end is connected with the main positive relay 24. One end of the third copper bar 73 is connected with the battery negative electrode end 62 and the other end is connected with the main negative relay 21. One end of the fourth copper bar 74 is connected with the negative output terminal 64 and the other end is connected with the main negative relay 21.

The first pole holder 81 is provided on the bottom case 10, and the output positive terminal 63 and the output negative terminal 64 are provided on the first pole holder 81. The first pole cover 82 is snap-fitted on the first pole mount 81. The second pole seat 83 is disposed on the bottom case 10, and the battery positive terminal 61 is disposed on the second pole seat 83. Second pole cap 84 is snap fit onto second pole mount 83. The third electrode holder 85 is disposed on the bottom case 10, and the battery positive terminal 61 is disposed on the third electrode holder 85. The third pole cover 86 is snap-fitted to the third pole mount 85.

Be equipped with wiring seat 91 between first mounting groove 11 and the fourth mounting groove 14, be equipped with wiring hole 911 on the wiring seat 91, wiring hole 911 is used for installing the pencil. A wiring ring 92 is provided on an inner sidewall of the bottom case 10, and the wiring ring 92 is used to mount a wire harness.

The battery protection apparatus 100 and the operation thereof according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery protection device, comprising:

the bottom shell is provided with a first mounting groove, a second mounting groove, a third mounting groove, a fourth mounting groove and a fifth mounting groove, wherein the second mounting groove, the third mounting groove, the fourth mounting groove and the fifth mounting groove are respectively and closely adjacent to four corners of the bottom shell;

the main negative relay is arranged on the second mounting groove;

the current sensor is arranged on the third mounting groove;

the pre-charging relay is arranged on the fourth mounting groove;

the main positive relay is arranged on the fifth mounting groove;

the pre-charging resistor is arranged on the first mounting groove;

the low-voltage communication plug connector is arranged on the bottom shell;

the high-voltage sampling plug connector is arranged on the bottom shell;

the top cover is arranged on the bottom shell and is provided with a first plug hole and a second plug hole, the first plug hole corresponds to the low-voltage communication plug connector, and the second plug hole corresponds to the high-voltage sampling plug connector;

the detachable structure comprises a clamping plate and a clamping protrusion matched with the clamping plate, the clamping plate is arranged on the top cover, a groove is formed in the bottom shell, the clamping protrusion is arranged on the groove, two opposite sides of the clamping plate can be abutted against the groove, and the thickness of the clamping plate is equal to the depth of the groove.

2. The battery protection device of claim 1, wherein the second mounting groove and the fifth mounting groove are identical in structure, the second mounting groove comprises a second main groove and two second auxiliary grooves, two of the second auxiliary grooves are arranged at two ends of a diagonal line of the second main groove, one side wall of two side walls of each second auxiliary groove is flush with the second main groove, the other side wall of the two side walls of each second auxiliary groove is in arc transition connection with the second main groove, and a second mounting hole is arranged on each second auxiliary groove.

3. The battery protection device according to claim 1, wherein the fourth mounting groove comprises a fourth main groove and two fourth auxiliary grooves, the two fourth auxiliary grooves are disposed at two ends of the fourth mounting groove in the length direction, each fourth auxiliary groove is trapezoidal and is in arc transition connection with the fourth main groove, and a fourth mounting hole is disposed on each fourth auxiliary groove.

4. The battery protection device according to claim 1, wherein the second mounting groove and the fourth mounting groove are respectively disposed adjacent to both long sides of the first mounting groove.

5. The battery protection device of claim 2, wherein the fourth mounting groove and the fifth mounting groove are formed in the same side of the first mounting groove, the battery protection device further comprises a third limiting seat, the third limiting seat is arranged between the fourth mounting groove and the fifth mounting groove, and opposite sides of the low-voltage communication plug connector are respectively abutted against the third limiting seat and the side wall of the bottom shell.

6. The battery protection device of claim 1, wherein the third mounting groove is disposed at an end of the first mounting groove remote from the second mounting groove, and the third mounting groove is disposed adjacent to the fifth mounting groove, a third wire passing space is defined between the third mounting groove and the first mounting groove, and a wire passing groove is disposed between the third mounting groove and the fifth mounting groove.

7. The battery protection device of claim 1, wherein two sets of U-shaped mounting seats are disposed on the bottom case, and the two sets of mounting seats together define the first mounting groove.

8. The battery protection device of claim 1, further comprising:

the first limiting seat is arranged between the third mounting groove and the bottom shell;

the spacing seat of second, the spacing seat of second is established the third mounting groove with between the second mounting groove, wherein an adjacent both sides of high pressure sampling plug connector end respectively support first spacing seat with on the spacing seat of second.

9. The battery protection device of claim 1, further comprising:

the battery positive end, the battery negative end, the output positive end and the output negative end are arranged on the bottom shell;

one end of the first copper bar is connected with the positive electrode end of the battery, and the other end of the first copper bar is connected with the main positive relay;

one end of the second copper bar is connected with the output positive terminal, and the other end of the second copper bar is connected with the main positive relay;

one end of the third copper bar is connected with the negative electrode end of the battery, and the other end of the third copper bar is connected with the main negative relay;

one end of the fourth copper bar is connected with the output negative electrode end, and the other end of the fourth copper bar is connected with the main negative relay.

10. The battery protection device of claim 9, further comprising:

the first pole seat is arranged on the bottom shell, and the output positive pole end and the output negative pole end are arranged on the first pole seat;

the first pole cover is clamped and matched on the first pole seat;

the second pole seat is arranged on the bottom shell, and the positive pole end of the battery is arranged on the second pole seat;

the second pole cover is clamped and matched on the second pole seat;

the third pole seat is arranged on the bottom shell, and the positive pole end of the battery is arranged on the third pole seat;

and the third pole cover is clamped and matched on the third pole base.

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