CN210576196U

CN210576196U - Battery pack circuit breaking device and battery pack

Info

Publication number: CN210576196U
Application number: CN201921714414.5U
Authority: CN
Inventors: 林水杉; 杨政杰; 杜禾; 嵇峰; 吴珍荣
Original assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Current assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-05-19
Anticipated expiration: 2029-10-14

Abstract

The utility model relates to a battery distribution technical field provides a battery package breaker and battery package, and battery package breaker includes casing, breaker, goes up casing and heating device down, and heating device includes on-off control device, and lower casing and last casing are detained mutually and are formed the holding cavity that is used for holding breaker, and heating device's on-off control device locates the casing and deviates from one side of breaker and with breaker electric connection. With the range upon range of setting of on-off control device and breaker to, locate one side that deviates from the breaker of casing with on-off control device, like this, avoid the two to separate the big problem of occupation of land space that independent setting leads to, and make things convenient for the two dismouting.

Description

Battery pack circuit breaking device and battery pack

Technical Field

The utility model relates to a battery distribution technical field especially provides a battery package breaker and have this battery package breaker's battery package.

Background

BDU (Battery Disconnect Unit) is an important component of a new energy vehicle, and is mainly used to Disconnect batteries between a high-voltage Battery pack of the new energy vehicle and other power electronic products to protect the safety of the system, and therefore, the safety, reliability, and other performances are particularly important.

Current battery package circuit breaker includes main part and heating part, and the main part realizes battery package circuit breaker function, and the heating part realizes the heating function to the battery package, including switching device usually and with switching device electric connection's heating film, the heating film then covers on the battery package, however, traditional battery package circuit breaker separately independently sets up above-mentioned two parts, like this, leads to battery package circuit breaker's whole volume great.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery package circuit breaker aims at solving current battery package circuit breaker and leads to the great problem of whole volume because of heating portion and main part separate independent setting.

In order to achieve the above object, the utility model adopts the following technical scheme: a battery pack circuit breaking device comprises a lower shell, a circuit breaking device, an upper shell and a heating device, wherein the heating device comprises a switch control device, the lower shell and the upper shell are buckled with each other to form a containing cavity used for containing the circuit breaking device, and the switch control device is arranged on one side, away from the circuit breaking device, of the upper shell and is electrically connected with the circuit breaking device.

In one embodiment, the switch control device comprises a first PCB, a charging relay welded on the first PCB, a fuse, a signal input terminal, a signal output terminal and a power supply terminal, wherein the first PCB is arranged on one side of the upper shell, which faces away from the circuit breaker.

In one embodiment, a first PCB board is provided with a first mounting hole and a second mounting hole for connecting an upper housing, and a distance from a short side of the first PCB board to the first mounting hole is greater than a distance from the short side of the first PCB board to the second mounting hole.

In one embodiment, the charging relay and the fuse are arranged on the first PCB side by side along the long side direction of the first PCB, the power supply terminal and the signal input terminal are respectively located at two sides of the charging relay, and the signal output terminal and the signal input terminal are adjacently arranged and located at the same side of the charging relay.

In one embodiment, the switch control device further comprises a protective housing detachably covering the upper housing.

In one embodiment, the protection shell is provided with a heat dissipation hole corresponding to the charging relay.

In one embodiment, the protective shell is further provided with an opening for exposing the signal output terminal.

In one embodiment, the circuit breaking device comprises a second PCB, two circuit breaking relays and four copper bars, each circuit breaking relay corresponds to two copper bars, the circuit breaking relays and the two copper bars are stacked on the lower shell, the two circuit breaking relays are electrically connected with the second PCB, and a transmission signal bus interface is arranged on the second PCB.

In one embodiment, the power supply terminals are respectively connected to the positive pin and the negative pin of the second PCB through two wires.

The utility model has the advantages that: the utility model discloses a battery package circuit breaker, with the range upon range of setting of heating device's on-off control device and circuit breaker to, locate one side that deviates from circuit breaker of casing with on-off control device, like this, avoid the two to separate the big problem in occupation of land space that independent setting leads to, and make things convenient for the two dismouting.

The utility model also provides a battery package, including foretell battery package circuit breaker.

The utility model has the advantages that: the utility model discloses a battery package is on the basis that has above-mentioned battery package circuit breaker, and whole volume is less to, it is more convenient to maintain.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is an exploded view of a circuit breaker device for a battery pack according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a battery pack circuit breaker according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another angle of the battery pack circuit breaker according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of another angle of the battery pack circuit breaker according to the embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

battery pack circuit breaking device	100	Power supply terminal	46
				Lower casing	10	First mounting hole	411
Circuit breaking device	20	Second mounting hole	412
				Upper shell	30	Protective shell	47
Heating device	400	Heat dissipation hole	471
				Switch control device	40	Opening holes	472
First PCB board	41	Second PCB board	21
				Charging relay	42	Circuit breaking relay	22
Fuse wire	43	Copper bar	23
				Signal input terminal	44	Transmission signal main interface	24
Signal output terminal	45

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 and intended to be used for 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 "length", "width", "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 merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 and 2, a battery pack circuit breaker apparatus 100 according to an embodiment of the present invention includes a lower case 10, a circuit breaker apparatus 20, an upper case 30, and a heating apparatus 400. The heating device 400 includes a switch control device 40, the lower housing 10 and the upper housing 30 are buckled to form a containing cavity for containing the circuit breaking device 20, and the switch control device 4040 is disposed on one side of the upper housing 30 departing from the circuit breaking device 20 and electrically connected to the circuit breaking device 20.

The embodiment of the utility model provides a battery package breaker 100, with the range upon range of setting of switching control device 40 and breaker 20 of heating device 400 to, locate one side that deviates from breaker 20 of casing 30 with switching control device 40, like this, avoid the two to separate the big problem in occupation of land space that independent setting leads to, and make things convenient for the two dismouting.

Referring to fig. 1 to 3, in an embodiment, the switch control device 40 includes a first PCB 41, a charging relay 42 soldered on the first PCB 41, a fuse 43, a signal input terminal 44, a signal output terminal 45, and a power supply terminal 46, wherein the first PCB 41 is disposed on a side of the upper housing 30 facing away from the circuit breaking device 20. Here, the power supply terminal 46 is electrically connected to the circuit breaking device 20 to supply power to the heating device 400. For example, in an environment with a low temperature, the heating device 400 heats the battery pack by activating the heating film through the switch control device 40, and adjusts the operating temperature of the packaged battery pack, and preferably, the fuse 43 is connected in series with the charging relay 42, and when the temperature in the battery pack is too high, the fuse 43 melts, and heating is finished.

Referring to fig. 1 to 3, in an embodiment, a first mounting hole 411 and a second mounting hole 412 for connecting the upper housing 30 are formed on the first PCB 41, and a distance from a short side of the first PCB 41 to the first mounting hole 411 is greater than a distance from the short side of the first PCB 41 to the second mounting hole 412. It can be understood that a connecting line of the center point of the first mounting hole 411 and the center point of the second mounting hole 412 intersects with the short side line of the first PCB 41, that is, there is a significant difference between the positions of the first mounting hole 411 and the second mounting hole 412 on the first PCB 41, so as to avoid the wrong mounting of the front and the back of the first PCB 41 during the mounting process.

Referring to fig. 3, in an embodiment, the charging relay 42 and the fuse 43 are arranged on the first PCB 41 side by side along a long side direction of the first PCB 41, the power supply terminal 46 and the signal input terminal 44 are respectively located at two sides of the charging relay 42, and the signal output terminal 45 is arranged adjacent to the signal input terminal 44 and located at the same side of the charging relay 42. Thus, the distance between the power supply terminal 46 and the signal input terminal 44 is increased to reduce the electromagnetic interference therebetween, thereby ensuring normal operation.

Referring to fig. 1 to 3, in an embodiment, the switch control device 40 further includes a protective housing 47, and the protective housing 47 is detachably covered on the upper housing 30. It will be appreciated that the protective housing 47 protects the switching control device 40 from exposure to the electrical components. Preferably, a plurality of buckles are arranged on the protective shell 47, buckle holes corresponding to the buckles are arranged on the upper shell 30, and the buckles are connected with the buckle holes in a clamping manner, so that the protective shell 47 and the upper shell 30 can be conveniently disassembled and assembled.

Referring to fig. 1 and 2, the protection housing 47 is provided with a heat dissipation hole 471 corresponding to the charging relay 42. It can be understood that the heat dissipation hole 471 helps to dissipate heat of the charging relay 42, and at the same time, reduces the height of the protection housing 47, thereby reducing the overall height of the battery pack disconnection apparatus 100.

Referring to fig. 1 and 2, the protection housing 47 further has an opening 472 for exposing the signal output terminal 45. As can be appreciated, the external signal interface is connected to the signal output terminal 45 through the opening 472.

Referring to fig. 1 to 3, in one embodiment, the circuit breaking device 20 includes a second PCB 21, two circuit breaking relays 22 and four copper bars 23, each circuit breaking relay 22 corresponds to two copper bars 23, the circuit breaking relays 22 and the two copper bars 23 are stacked on the lower housing 10, the two circuit breaking relays 22 are electrically connected to the second PCB 21, and the second PCB 21 is provided with a transmission signal bus 24. It can be understood that the first PCB 41 and the second PCB 21 are spaced apart from each other, and the interface of the second PCB is plugged into the signal input terminal 44 of the first PCB 41 to electrically connect the two. Moreover, after the heating device 40 is added, the battery pack circuit breaking device 100 still uses the uniform transmission signal main interface 24, so that the whole assembly is simpler.

Referring to fig. 3 and 4, in one embodiment, the power supply terminal 46 is connected to the positive pin and the negative pin of the second PCB 21 through two wires. It can be understood that, at the convenience of power supply, the first PCB 41 and the second PCB 21 are connected in parallel through a conducting wire, that is, when the second PCB 21 is powered on, the first PCB 41 can also be powered on.

The embodiment of the utility model provides a still provide a battery package, including foretell battery package circuit breaker 100.

With the battery pack circuit breaking device 100, the overall size of the battery pack is small, and the maintenance is more convenient.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A battery package circuit breaker which characterized in that: the heating device comprises a switch control device, the lower shell and the upper shell are buckled with each other to form an accommodating cavity for accommodating the circuit breaking device, and the switch control device is arranged on one side of the upper shell, which is deviated from the circuit breaking device, and is electrically connected with the circuit breaking device.

2. The battery pack disconnection device of claim 1, wherein: switch control device includes first PCB board, welds in charge relay, fuse, signal input terminal, signal output terminal and the power supply terminal of first PCB board, first PCB board is located it deviates from to go up the casing one side of breaker device.

3. The battery pack disconnection device of claim 2, wherein: the first PCB is provided with a first mounting hole and a second mounting hole, the first mounting hole is used for connecting an upper shell, and the distance from the first mounting hole to a short edge of the first PCB is greater than the distance from the second mounting hole to the short edge of the first PCB.

4. The battery pack disconnection device of claim 2, wherein: charging relay with the fuse is followed the long limit direction of first PCB board is located side by side on the first PCB board, the power supply terminal with signal input terminal is located respectively charging relay's both sides, signal output terminal with signal input terminal is adjacent to be set up and is located charging relay's homonymy.

5. The battery pack disconnection device according to any one of claims 2 to 4, wherein: the switch control device further comprises a protective shell, and the protective shell is detachably covered on the upper shell.

6. The battery pack disconnection device of claim 5, wherein: the protection shell is provided with heat dissipation holes corresponding to the charging relay.

7. The battery pack disconnection device of claim 5, wherein: the protection shell is also provided with an opening for exposing the signal output terminal.

8. The battery pack disconnection device of claim 2, wherein: the circuit breaking device comprises a second PCB, two circuit breaking relays and four copper bars, wherein each circuit breaking relay corresponds to two copper bars, the circuit breaking relays and the two copper bars are arranged on the lower shell in a stacked mode, the circuit breaking relays are electrically connected with the second PCB, and a transmission signal main interface is arranged on the second PCB.

9. The battery pack disconnection device of claim 8, wherein: and the power supply terminal is respectively connected to the anode pin and the cathode pin of the second PCB through two wires.

10. A battery pack, comprising: comprising a battery pack disconnection device according to any of claims 1 to 9.