CN211719732U - Battery distribution box and battery pack - Google Patents

Abstract

The utility model relates to the field of batteries, and provides a battery power distribution box and a battery pack. The battery power distribution box comprises a base, a plurality of copper bars embedded on the base, a relay mounted on the base, and a battery for connecting the copper bars and a battery. The first connecting piece of the relay, the first connecting piece passes through the copper bar and the relay in sequence from the bottom of the base, and the end side of the first connecting piece facing away from the copper bar is provided with a first heat-conducting insulating piece for abutting the external installation object. In the battery distribution box of the present invention, a first heat-conducting insulating member is added at the end of the first connecting member away from the copper bar, so that the heat generated by the relay is transmitted through the copper bar, the first connecting member and the first heat-conducting insulating member in turn. to the external installation object, thereby improving the heat dissipation efficiency of the relay.

Description

Battery distribution box and battery pack

technical field

The utility model relates to the technical field of battery packs, in particular to a battery distribution box and a battery pack having the battery distribution box.

Background technique

As the current social energy crisis becomes more and more serious, new energy vehicles have attracted more and more attention from the society, especially electric vehicles. The power battery is an important part of the electric vehicle. Due to the driving mileage and output power requirements of the vehicle, power batteries generally have the characteristics of large capacity and high voltage. The battery distribution box is the power distribution unit of the power battery pack. Its function is to ensure that the battery pack transmits power to the vehicle, and is a bridge between the power supply and signal transmission of the high-voltage equipment inside the battery pack and the external vehicle. And receive the instructions of the battery management system at any time, and realize the power-on and power-off function of the battery pack in time.

The existing battery distribution box includes a relay and a copper bar connected to the relay, wherein the relay is the main heating element, and the heat is transferred to the air through the copper bar for heat dissipation, so the heat dissipation efficiency is low.

Utility model content

The purpose of the utility model is to provide a battery distribution box, which aims to solve the problem of low heat dissipation efficiency of the existing battery distribution box.

In order to achieve the above purpose, the technical scheme adopted by the present invention is: a battery power distribution box, comprising a base, a plurality of copper bars embedded on the base, a relay installed on the base, and a relay for connecting the copper bars and the relay. A first connector, the first connector penetrates the copper bar and the relay in sequence from the bottom of the base, and the end side of the first connector facing away from the copper bar is provided with a first heat-conducting insulator for contacting an external installation object.

Beneficial effects of the present utility model: In the battery distribution box provided by the present utility model, a first heat-conducting insulating member is added at the end of the first connecting member away from the copper bar, so that the heat generated by the relay passes through the copper bar and the first connecting member in turn. The heat-dissipating parts and the first heat-conducting insulating parts are transmitted to the external installation object, thereby improving the heat dissipation efficiency of the relay.

In one embodiment, the first thermally conductive insulating member has a first end face facing the first connecting member and a second end face opposite to the first end face and abutting against the external installation object, the first end face is recessed for accommodating the first end face An accommodating groove structure at the end of the connecting piece.

By adopting the above technical solution, the end of the first connecting piece is wrapped by the accommodating groove structure, so as to increase the contact area between the first thermally conductive insulating piece and the first connecting piece and improve the heat conduction efficiency.

In one embodiment, the second end face is provided with an abutment structure for abutting an external installation object.

By adopting the above technical solutions, similarly, the contact area between the first thermally conductive insulating member and the external installation object is increased by using the abutting structure, and the heat conduction efficiency is improved.

In one embodiment, the battery distribution box further includes a second connector, the second connector is close to the copper bar, and the base is connected to the external installation object through the second connector.

By adopting the above technical solution, the second connecting piece is arranged close to the copper bar, and the heat generated by the relay can also be conducted to the outside through the second connecting piece.

In one embodiment, the battery distribution box further includes a pre-charging resistor and an upper cover covering the pre-charging resistor, the pre-charging resistor is mounted on the base, and the upper cover is provided with a heat dissipation hole corresponding to the pre-charging resistor.

By adopting the above technical solution, the heat generated by the pre-charging resistor, which is also a heating element, is diffused to the outside through the heat dissipation holes of the upper cover.

In one embodiment, the battery distribution box further includes a heat dissipation member, and the heat dissipation member is placed at the heat dissipation hole and abuts against the precharging resistor.

By adopting the above technical solution, the heat dissipation efficiency of the precharging resistor is further improved by using the heat dissipation element.

In one embodiment, the battery power distribution box further includes a second thermally conductive insulating member, and the second thermally conductive insulating member is disposed between the heat dissipation member and the precharging resistor.

By adopting the above technical solutions, similarly, the second heat-conducting insulating member is used to increase the contact area between the heat dissipation member and the pre-charging resistor, thereby further improving the heat-dissipating efficiency of the pre-charging resistor.

In one embodiment, a plurality of through holes are opened on the base, and each through hole corresponds to a pre-charging resistor.

By adopting the above technical solution, the heat generated during the operation of the pre-charging resistor can also be transmitted to the outside through each through hole.

In one embodiment, the side of the pre-charging resistor facing the base is provided with a third thermally conductive insulating member for abutting against an external installation object.

By adopting the above technical solutions, similarly, the third heat-conducting insulating member is used to increase the contact area between the pre-charging resistor and the external installation object, thereby further improving the heat dissipation efficiency of the pre-charging resistor.

The utility model also provides a battery pack, which includes a box body and the above-mentioned battery distribution box. The box body is provided with a plurality of convex structures, and each convex structure is in contact with the first heat-conducting insulating member of the battery distribution box.

Beneficial effects of the utility model: The battery pack provided by the utility model, on the basis of the above-mentioned battery distribution box, has a safer working process and higher working heat dissipation efficiency.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present utility model. For some new embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is an exploded view of a battery distribution box provided by an embodiment of the present invention;

2 is a cross-sectional view of a battery distribution box provided by an embodiment of the present invention;

3 is another cross-sectional view of a battery distribution box provided by an embodiment of the present invention;

4 is a cross-sectional view of a first thermally conductive insulating member of a battery distribution box provided by an embodiment of the present invention.

Among them, each reference sign in the figure:

Battery distribution box 100, base 10, copper bar 20, relay 30, first connector 41, first thermal insulation member 51, first end face 51a, second end face 51b, accommodating groove structure 51c, abutting structure 51d, The second connecting member 42 , the pre-charging resistor 60 , the upper cover 70 , the heat dissipation hole 70 a , the heat dissipation member 80 , the second thermally conductive insulating member 52 , the through hole 10 a , the third thermally conductive insulating member 53 , the box body 200 , and the convex structure 201 .

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, Rather than indicating or implying that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Referring to FIGS. 1 and 2 , a battery distribution box 100 provided by an embodiment of the present invention includes a base 10 , a plurality of copper bars 20 embedded on the base 10 , a relay 30 mounted on the base 10 , and a connection for connecting The first connecting piece 41 of the copper bar 20 and the relay 30, the first connecting piece 41 passes through the copper bar 20 and the relay 30 in sequence from the bottom of the base 10, and the end side of the first connecting piece 41 away from the copper bar 20 is provided with a The first thermally conductive insulating member 51 is connected to the external installation object. Here, the first connecting member 41 may be a screw, a pin, or the like. And, the first thermally conductive insulating member 51 is a thermally conductive silicone grease, a thermally conductive silicone cloth, a thermally conductive tape, and the like with high thermal conductivity. Also, the external installation object may be a case or a mounting plate of the battery pack, or the like.

In the battery distribution box 100 provided by the present invention, a first heat-conducting insulating member 51 is added at the end of the first connecting member 41 away from the copper bar 20, so that the heat generated by the relay 30 passes through the copper bar 20 and the first connecting member in turn. 41 and the first heat-conducting insulating member 51 are transferred to the external installation object, and the heat dissipation efficiency is higher than that of directly transferring the heat from the copper bar 20 to the air, that is, air cooling.

Referring to FIGS. 2 and 4 , in one embodiment, the first thermally conductive insulating member 51 has a first end face 51a facing the first connecting member 41 and a second end face 51b opposite to the first end face 51a, and the first end face 51a is recessed An accommodating groove structure 51c for accommodating the end of the first connecting piece 41 is formed. Here, the inner contour of the accommodating groove structure 51c is adapted to the outer contour of the end of the first connecting piece 41 . Understandably, the accommodating groove structure 51c is used to wrap the end of the first connecting member 41 to increase the contact area between the first thermally conductive insulating member 51 and the first connecting member 41 and improve the heat conduction efficiency.

Referring to FIG. 2 and FIG. 4 , in one embodiment, the second end surface 51 b is provided with an abutment structure 51 d for abutting against an external installation object. Similarly, the contact area between the first thermally conductive insulating member 51 and the external installation object is increased by using the abutting structure 51d to improve the heat conduction efficiency. Preferably, please refer to FIG. 4 , the abutting structure 51d is a boss formed by protruding outward from the second end surface 51d of the first thermally conductive insulating member 51 , and the area of the end surface of the boss is larger than that of the second end surface 51d , that is, The contact area with external installation objects is larger.

Referring to FIG. 1 , in one embodiment, the battery distribution box 100 further includes a second connector 42 , the second connector 42 is close to the copper bar 20 , and the base 10 is connected to an external installation object through the second connector 42 . Here, the second connecting member 42 is the same as the first connecting member 41 , and can also be a screw, a pin or the like. It can be understood that by arranging the second connecting member 42 close to the copper bar 20 , the heat generated by the relay 30 can also be conducted to the outside and external installation objects through the second connecting member 42 .

Please refer to FIGS. 1 and 3 , in one embodiment, the battery distribution box 100 further includes a pre-charging resistor 60 and an upper cover 70 covering the pre-charging resistor 60 , the pre-charging resistor 60 is mounted on the base 10 , and the upper cover A heat dissipation hole 70 a corresponding to the pre-charging resistor 60 is formed on the 70 . Here, the pre-charging resistor 60 is also an element that generates heat during operation, so it also needs to be dissipated. Therefore, the heat generated by the pre-charging resistor 60 is diffused to the outside through the heat dissipation holes 70 a of the upper cover 70 .

Referring to FIG. 1 and FIG. 3 , in one embodiment, the battery distribution box 100 further includes a heat dissipation member 80 , and the heat dissipation member 80 is placed at the heat dissipation hole 70 a and abuts against the pre-charging resistor 60 . Here, the heat sink 80 can be an existing metal heat sink. Since the thermal conductivity of the metal material itself is higher, the heat sink 80 can further improve the heat dissipation efficiency of the pre-charging resistor 60 .

Referring to FIG. 1 and FIG. 3 , in one embodiment, the battery distribution box 100 further includes a second thermally conductive insulating member 52 , and the second thermally conductive insulating member 52 is disposed between the heat dissipation member and the pre-charging resistor 60 . Similarly, the second heat-conducting insulating member 52 is used to increase the contact area between the heat-dissipating member and the pre-charging resistor 60 , thereby further improving the heat-dissipating efficiency of the pre-charging resistor 60 .

Referring to FIG. 3 , in one embodiment, a plurality of through holes 10 a are formed on the base 10 , and each through hole 10 a corresponds to the pre-charging resistor 60 . In this way, the heat generated during the operation of the precharging resistor 60 can also be transferred to the outside through the through holes 10a.

Referring to FIG. 3 , in one embodiment, a side of the pre-charging resistor 60 facing the base 10 is provided with a third thermally conductive insulating member 53 for abutting against an external installation object. Similarly, the third thermally conductive insulating member 53 is used to increase the contact area between the precharging resistor 60 and the external installation object, thereby further improving the heat dissipation efficiency of the precharging resistor 60 .

Please refer to FIG. 2 and FIG. 3 , the present invention further provides a battery pack, including a box body 200 and the above-mentioned battery distribution box 100 . The box body 200 is provided with a plurality of convex structures 201 , and each convex structure 201 abuts against. The first thermally conductive insulating member 51 of the battery distribution box 100 . Here, the protrusion structure 201 can be a protrusion made of metal or plastic material, that is, the protrusion is used to abut the first thermally conductive insulating member 51 of the battery distribution box 100 to transfer the heat generated by the relay 30 to the box body 200 . for heat dissipation.

The battery pack provided by the present invention, on the basis of the above-mentioned battery distribution box 100, has a safer working process and higher working heat dissipation efficiency.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the present utility model. within the scope of protection.

Claims (10)

1. A battery distribution box, characterized in that it comprises a base, a plurality of copper bars embedded on the base, a relay mounted on the base, and a relay for connecting the copper bar and the relay. A first connecting piece, the first connecting piece penetrates through the copper bar and the relay in sequence from the bottom of the base, and the end side of the first connecting piece facing away from the copper bar is provided with a contact with the outside Install the first thermally conductive insulating member of the object. 2 . The battery distribution box according to claim 1 , wherein the first thermally conductive insulating member has a first end face facing the first connecting member and a first end face opposite to the first end face and mounted to the outside. 3 . The second end face abutting against the object, the first end face is recessed to form an accommodating groove structure for accommodating the end of the first connecting piece. 3 . The battery distribution box according to claim 2 , wherein the second end surface is provided with an abutment structure for abutting an external installation object. 4 . 4 . The battery distribution box according to claim 1 , wherein the battery distribution box further comprises a second connecting piece, the second connecting piece is close to the copper bar, and the base passes through the base. 5 . The second connector is connected to an external installation object. 5 . The battery distribution box according to claim 1 , wherein the battery distribution box further comprises a pre-charging resistor and an upper cover covering the pre-charging resistor, and the pre-charging resistor is installed on the pre-charging resistor. 6 . On the base, the upper cover is provided with a heat dissipation hole corresponding to the pre-charging resistor. 6 . The battery distribution box according to claim 5 , wherein the battery distribution box further comprises a heat dissipation member, and the heat dissipation member is placed at the heat dissipation hole and abuts against the pre-charging resistor. 7 . 7 . The battery power distribution box according to claim 6 , wherein the battery power distribution box further comprises a second thermally conductive insulating member, and the second thermally conductive insulating member is disposed between the heat dissipation member and the precharged battery. 8 . between the resistors. 8 . The battery distribution box according to claim 5 , wherein a plurality of through holes are formed on the base, and each of the through holes corresponds to the pre-charging resistor. 9 . 9 . The battery distribution box according to claim 5 , wherein the side of the pre-charging resistor facing the base is provided with a third thermally conductive insulating member for abutting against an external installation object. 10 . 10. A battery pack, comprising a box body, characterized in that it further comprises the battery distribution box according to any one of claims 1 to 9, wherein the box body is provided with a plurality of protruding structures, each of which is The partial structure is in contact with the first thermally conductive insulating member of the battery distribution box.

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