CN211376878U

CN211376878U - Battery distribution device and battery pack

Info

Publication number: CN211376878U
Application number: CN201921941591.7U
Authority: CN
Inventors: 周芳
Original assignee: Chengdu Mingran Intelligent Technology Co ltd
Current assignee: Chengdu Mingran Intelligent Technology Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-08-28
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a battery distribution device, group battery. The embodiment of the utility model provides a battery distribution device, include: a housing; the electronic element layer is arranged in the shell and is provided with conductive pins; the composite bus bar layer is arranged in the shell and positioned on the electronic element layer, and the composite bus bar layer is electrically connected with the conductive pins of the electronic element layer; and the heat dissipation assembly is in heat conduction connection with the composite busbar layer and is provided with a first fluid loop for conducting heat generated by the composite busbar layer to the outside of the shell. According to the utility model discloses battery distribution device can effectively dispel the heat.

Description

Battery distribution device and battery pack

Technical Field

The utility model relates to a battery technology field, concretely relates to battery distribution device, group battery.

Background

With the continuous development of new energy technology, new energy products are continuously popularized, and batteries are more and more widely applied in the field of new energy, particularly in the field of electric vehicles. In addition, the power battery of the electric vehicle generally has characteristics such as a large capacity and a high voltage due to a demand for a driving range of the electric vehicle, a demand for output power, and the like. The battery distribution box is a power distribution unit of a power battery, and has the functions of transmitting the electric energy of the battery to each unit in the electric vehicle and realizing the functions of electrifying and powering off the battery.

However, in order to provide more battery modules in a limited space to meet the endurance requirement, the space occupied by the battery distribution box is often small. Thus, the battery distribution box is difficult to dissipate the generated heat due to the limitation of its own space and surrounding space, which may adversely affect the battery distribution box's own electrical components and surrounding battery modules.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery distribution device, group battery can effectively dispel the heat.

In a first aspect, an embodiment of the present invention provides a battery power distribution apparatus, including: a housing; the electronic element layer is arranged in the shell and is provided with conductive pins; the composite bus bar layer is arranged in the shell and positioned on the electronic element layer, and the composite bus bar layer is electrically connected with the conductive pins of the electronic element layer; and the heat dissipation assembly is in heat conduction connection with the composite busbar layer and is provided with a first fluid loop for conducting heat generated by the composite busbar layer to the outside of the shell.

According to the utility model discloses an aspect, radiator unit includes: the heat exchange plate is positioned on the composite busbar layer and is in heat conduction connection with the composite busbar layer; the first pipeline is connected with two ends of the heat exchange plate to form a first fluid loop, and heat-conducting fluid is arranged in the first fluid loop; the heat exchanger is arranged outside the shell and sleeved on the first pipeline.

According to the utility model discloses an aspect is provided with the runner in the heat transfer board, and the runner has inlet and the liquid outlet of connecting first pipeline.

According to the utility model discloses an aspect, heat transfer plate and compound are arranged and are provided with insulating heat-conducting layer between the layer, are provided with the pump that is used for making heat-conducting fluid flow in the first fluid return circuit on the first pipeline.

According to an aspect of the embodiment of the present invention, the heat exchanger includes a plurality of fins sleeved on the first pipeline, and a fan for promoting the heat of the plurality of fins to be dissipated to the external environment.

According to an aspect of an embodiment of the present invention, the heat dissipating assembly further comprises a second fluid circuit for cooling the heat transfer fluid in the first pipe via the heat exchanger.

According to the utility model discloses an aspect, radiator unit still includes: and the second pipeline is connected with the heat exchanger to form a second fluid loop, a refrigeration working medium is arranged in the second fluid loop, and the liquid refrigeration working medium absorbs the heat of the heat-conducting fluid in the first pipeline at the heat exchanger and is converted into the gaseous refrigeration working medium.

According to the utility model discloses an aspect, radiator unit still includes the compressor, and the compressor is used for compressing into gaseous refrigerant into liquid and exothermic.

According to the utility model discloses an aspect, radiator unit still includes the condenser, and the condenser sets up outside the casing and is used for changing into the heat that liquid was emitted by the gaseous state with refrigerant and gives off external environment.

In a second aspect, embodiments of the present invention provide a battery pack comprising a battery distribution device according to any of the above embodiments.

According to the utility model discloses battery distribution device, through including: a housing; the electronic element layer is arranged in the shell and is provided with conductive pins; the composite bus bar layer is arranged in the shell and positioned on the electronic element layer, and the composite bus bar layer is electrically connected with the conductive pins of the electronic element layer; radiator unit is connected and has the heat conduction of arranging the layer production with compound female the row and conduct the outer first fluid circuit of casing, according to the utility model discloses battery distribution device can be with in the casing compound female heat conduction that the layer produced outside conducting the casing to effectively dispel the heat to battery distribution device.

In some alternative embodiments, the method comprises: the heat dissipation assembly further comprises a second pipeline, the second pipeline is connected with the heat exchanger to form a second fluid loop, a refrigeration working medium is arranged in the second fluid loop, the liquid refrigeration working medium absorbs heat of heat-conducting fluid in the first pipeline at the heat exchanger and is converted into gaseous refrigeration working medium, the second fluid loop formed by the second pipeline is independent of the first fluid loop, the heat exchanger can be intensively dissipated by adopting a mode with a stronger refrigeration effect, the heat dissipation effect and the heat dissipation efficiency are improved, parts used for dissipating heat in and around the shell can be reduced, the path length of the first fluid loop can be shortened, and the space in the shell and the space around the shell are designed to be more compact.

Drawings

Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.

Fig. 1 shows a schematic structural view of an embodiment of a battery distribution device according to the invention;

fig. 2 shows a schematic structural view of another embodiment of a battery distribution device according to the present invention;

fig. 3 shows a schematic structural diagram of an embodiment of a battery pack according to the present invention.

In the figure:

100-a housing;

200-an electronic component layer;

300-a composite busbar layer;

410-heat exchange plates; 420-a first conduit; 430-a heat exchanger; 440-a condenser; 450-a second conduit; 460-a compressor;

500-second housing.

Detailed Description

The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a battery power distribution apparatus according to the present invention.

An embodiment of the utility model provides a battery power distribution unit, especially, the battery power distribution unit who is used for electric automobile, battery power distribution unit specifically can be battery open circuit unit (BDU). The embodiment of the utility model provides a battery power distribution device includes that casing 100, electronic component layer 200, compound female layer 300 and the radiator unit of arranging.

The housing 100 surrounds a receiving space and may include a first housing part and a second housing part that are removable. The housing 100 may be contoured to fit within a receiving space defined by its peripheral components. The material of the case 100 may be metal, plastic, etc., and the surface of the case 100 may be coated with a coating layer such as an insulating layer. Specifically, the housing 100 may have a fixing portion extending toward the inside of the accommodating space to fix components provided within the housing 100, and the housing 100 may further have a mounting portion extending toward the outside of the accommodating space to be fixedly mounted to peripheral components.

The electronic component layer 200 is disposed in the housing 100, i.e., located in the accommodating space of the housing 100. The electronic component layer 200 includes various electronic components for transmitting power of the battery to various units in the electric vehicle and for performing power on/off functions of the battery. The electronic component layer 200 also has conductive pins. The conductive pin may be plural. Conductive pins may be routed from the respective electronic component and used for electrical connection.

The composite busbar layer 300 is disposed in the housing 100 and on the electronic element layer 200. The composite busbar layer 300 is a multilayer composite structure. The composite busbar layer 300 specifically includes a plurality of insulating layers, and a patterned conductive layer is sandwiched between adjacent insulating layers. The insulating layer may be a material having a high dielectric constant and breakdown voltage, such as epoxy, polyester, aramid, and the like. The conductive layer may be a metal material having excellent conductivity, such as pure copper, brass, or an aluminum alloy. The patterned conductive layer may be filled with an insulating material around the conductive material to form a layer sandwiched between the insulating layers. The composite busbar layer 300 has a plurality of electrical connection holes. The composite busbar layer 300 is electrically connected to the conductive pins of the electronic component layer 200. Specifically, the conductive pins are connected to the electrical connection holes of the composite busbar layer 300, and each electronic element of the electronic element layer 200 is electrically connected through the composite busbar layer 300.

The heat dissipation assembly is thermally connected to the composite busbar layer 300 and has a first fluid loop for conducting heat generated by the composite busbar layer 300 to the outside of the housing 100. One portion of the heat dissipation assembly is inside the housing 100 and another portion is outside the housing 100. The heat sink assembly may pass through the case 100 through a through hole provided on the case 100. At least part of the heat dissipation assembly is disposed on the composite busbar layer 300, that is, on the side of the composite busbar layer 300 opposite to the electronic element layer 200. The heat sink may form heat exchange with the composite busbar layer 300 through a portion disposed on the composite busbar layer 300, so as to transfer heat at the composite busbar layer 300 to the heat sink. The heat sink assembly conducts heat out of the housing 100 through the first fluid circuit. The first fluid circuit may be enclosed with a circulatable flow of fluid. The heat moves from the first position of the heat dissipation assembly corresponding to the composite busbar layer 300 to the second position of the heat dissipation assembly outside the housing 100 through the circularly flowing fluid, so that the heat generated by the composite busbar layer 300 is conducted outside the housing 100.

According to the utility model discloses battery distribution device, through including: a housing 100; an electronic component layer 200 disposed in the housing 100 and having conductive pins; the composite busbar layer 300 is arranged in the shell 100 and positioned on the electronic element layer 200, and the composite busbar layer 300 is electrically connected with the conductive pins of the electronic element layer 200; radiator unit is connected and has the heat conduction that arranges layer 300 with compound and arranges the outer first fluid circuit of casing 100 with the heat conduction that layer 300 produced of compound mother, according to the utility model discloses outside battery distribution device can be with the heat conduction that the female layer 300 of compound produced of casing 100 in the casing 100 to casing 100 is effectively dispelled the heat to battery distribution device.

In some alternative embodiments, the heat dissipation assembly specifically includes a heat exchange plate 410, a first pipe 420, and a heat exchanger 430.

The heat exchange plate 410 is located on the composite busbar layer 300 and is in heat conduction connection with the composite busbar layer 300. The heat exchange plate 410 has a plate-shaped structure. The heat exchange plate 410 at least partially covers the composite busbar layer 300. The heat exchanging plate 410 may be a material with good heat conductivity, such as metal, and may specifically be copper, aluminum, or the like. Flow passages are provided in the heat exchange plate 410. The flow channels in the heat exchange plate 410 may be arranged in a single layer along the thickness direction of the heat exchange plate 410, and extend along the width and length directions of the heat exchange plate 410. The flow passage has a liquid inlet and a liquid outlet connected to the first pipe 430. In one embodiment, the flow channel is bent back and forth in a region corresponding to the surface of the composite busbar layer 300, and the liquid inlet and the liquid outlet are respectively arranged at two ends of the flow channel. In another embodiment, the heat exchange plate 410 comprises a plurality of flow channels arranged in parallel, wherein one end of each of the plurality of flow channels is connected to the liquid inlet at one corresponding position, and the other end of each of the plurality of flow channels is connected to the liquid outlet at another corresponding position. In particular, the heat exchanger plate 410 may comprise a first half and a second half which may be spliced together, the first half and the second half having a plurality of strip-like recesses arranged in parallel on a connecting surface thereof. The plurality of strip-shaped recesses on the first half part and the plurality of strip-shaped recesses on the second half part can be spliced into a plurality of flow channels. The first half and the second half may be joined by welding, adhesive, connector connection, or the like.

In some optional embodiments, an insulating heat conducting layer is disposed between the heat exchange plate 410 and the composite busbar layer 300. The insulating heat-conducting layer can be heat-conducting silica gel, and can be in full contact with the unevenness on the surface of the heat exchange plate 410 or the composite busbar layer 300, so that the heat exchange plate 410 and the composite busbar layer 300 can be more fully subjected to heat exchange. And insulating heat-conducting layer is insulating material, can play insulating protection to the circuit on the female layer 300 of arranging of compound.

The first pipe 420 connects both ends of the heat exchange plate 410 to form a first fluid circuit. Specifically, the first pipe 420 may be a single pipe or a plurality of pipes. A first conduit 420 may connect the inlet and outlet ports of heat exchange plate 410 to form a first fluid circuit. The first pipe 420 may be a tubular structure having a flow passage in the middle. A portion of the first conduit 420 is located within the housing 100 and another general portion is located outside the housing 100. A heat transfer fluid is disposed within the first fluid circuit. The heat transfer fluid may be, for example, water, but may also be other fluids that may be used to transfer heat. The heat transfer fluid may flow, e.g., circulate, in the first conduit 420 and the flow channels in the heat exchange plates 410. When flowing through the heat exchange plate 410, the heat transfer fluid may absorb heat emitted from the composite busbar layer 300 and carry the heat out of the housing 100 by flowing.

In some alternative embodiments, a pump is disposed on the first pipe 420 for flowing the heat transfer fluid in the first fluid circuit.

The heat exchanger 430 is disposed outside the casing 100 and sleeved on the first pipeline 420. The heat-conducting fluid absorbs heat from the composite busbar layer 300 at the heat exchange plate 410 and circulates to the heat exchanger 430 through the first pipeline 420, the heat-conducting fluid with higher heat exchanges heat with the external environment through the heat exchanger 430 to dissipate the heat to the external environment, and the heat-conducting fluid with lower temperature after dissipating the heat flows back to the heat exchange plate 410 in the first pipeline 420 to continuously absorb the heat. Since the heat exchanger 430 is disposed outside the case 100, heat is radiated outside the case 100 at the heat exchanger 430, thereby ensuring that the temperature inside the case 100 is not excessively high.

The first pipe 420 may be arranged in a curved shape in the heat exchanger 430 to increase a contact area with the heat exchanger 430, thereby improving a heat exchange effect.

In some alternative embodiments, the heat exchanger 430 includes a plurality of fins that are nested within the first tube 420. A plurality of fins may be disposed side by side, and the first pipe 420 is bent back and forth across the plurality of fins to be in full contact with the fins, facilitating heat exchange. The heat sink can be copper, aluminum alloy, etc. The heat exchanger 430 may further include a fan for facilitating heat dissipation from the plurality of fins to the external environment. The fan can make the air convection in the radiating fin to be favorable for heat dissipation.

Referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of a battery power distribution apparatus according to the present invention.

In other alternative embodiments, the heat sink assembly further includes a second fluid circuit that cools the heat transfer fluid within the first conduit 420 via the heat exchanger 430. In this embodiment, the heat exchanger 430 may be a plurality of fins or a box-like body surrounding the heat exchange space.

Specifically, the heat dissipation assembly further includes a second pipe 450. The second pipe 450 connects the heat exchanger 430 to form a second fluid circuit. The second pipe 450 may have a curved path within the heat exchanger 430 to increase the heat exchange area. A refrigeration working medium is arranged in the second fluid loop. The refrigerating medium may be ammonia, freon, etc. The liquid refrigerant absorbs heat from the heat transfer fluid in first conduit 420 at heat exchanger 430 and converts to a gaseous refrigerant. The refrigerant absorbs a large amount of heat during the process of changing from liquid to gas, so that the temperature of the ambient environment at heat exchanger 430 is greatly reduced, and the heat-conducting fluid in first pipeline 420 at heat exchanger 430 is further cooled.

The second fluid circuit formed by the second pipeline 450 is disposed independently from the first fluid circuit, and can perform concentrated heat dissipation at the heat exchanger 430 in a manner of having a stronger cooling effect, thereby improving the heat dissipation effect and the heat dissipation efficiency, and reducing components for heat dissipation in the casing 100 and around the casing 100, and can shorten the path length of the first fluid circuit, so that the space in the casing 100 and the space around the casing 100 are designed to be more compact. Moreover, the heat dissipation assembly is used for heat dissipation transition, so that the heat dissipation efficiency is improved, and meanwhile, the composite busbar layer 300 can be protected from being in an environment with a large temperature difference, so that a circuit structure in the composite busbar layer 300 is protected.

In some embodiments, the heat dissipation assembly further includes a compressor 460, the compressor 460 for compressing the refrigerant in the gaseous state into the liquid state and releasing heat. The heat dissipation assembly further includes a condenser 440, and the condenser 440 is disposed outside the casing 100 and is used for dissipating heat generated by transforming the refrigerant from a gaseous state to a liquid state to the external environment. The condenser 440 and the compressor 460 may be disposed adjacent. The compressor 460 compresses refrigerant in a specific heat dissipation area to dissipate heat through the condenser 440. The condenser 440 and the compressor 460 may be located relatively far from the casing 100, for example, may be located outside of another casing surrounding the casing 100. Therefore, the heat emitted by the composite busbar layer 300 is emitted to the position relatively far away from the composite busbar layer 300 in a multi-stage loop mode, and the situation that the ambient temperature around the shell 100 is raised due to the heat emission to indirectly raise the temperature in the shell 100 is avoided.

Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of a battery pack according to the present invention.

The embodiment of the utility model provides a still provide a group battery, include the battery distribution device according to any embodiment of the aforesaid. The battery pack can comprise a plurality of battery units, and the battery power distribution device is used for carrying out power distribution control and on and off operations on the battery units. The battery pack includes a second case 500. In some embodiments, the condenser 440 and the compressor 460 may be located outside the second casing 500, with the heat exchanger 430 located between the first casing 100 and the second casing 500. Fig. 3 schematically shows only the relative positional relationship of the second housing 500 and the battery power distribution device.

The embodiment of the utility model provides a battery pack, including second casing 500, condenser 440 and compressor 460 can be located outside second casing 500, and heat exchanger 430 is located between first casing 100 and second casing 500, and condenser 440 and compressor 460 can dispel the heat outside second casing 500 of keeping away from casing 100 relatively, have avoided the heat to give off and have made casing 100 ambient temperature rise and indirectly rise the temperature in casing 100.

In accordance with the embodiments of the present invention as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A battery power distribution apparatus, comprising:

a housing (100);

an electronic element layer (200) arranged in the shell (100) and provided with conductive pins;

the composite busbar layer (300) is arranged in the shell (100) and positioned on the electronic element layer (200), and the composite busbar layer (300) is electrically connected with the conductive pins of the electronic element layer (200);

the heat dissipation assembly is in heat conduction connection with the composite busbar layer (300) and is provided with a first fluid loop which conducts heat generated by the composite busbar layer (300) to the outside of the shell (100).

2. The battery distribution apparatus of claim 1, wherein the heat sink assembly comprises:

the heat exchange plate (410) is positioned on the composite busbar layer (300) and is in heat conduction connection with the composite busbar layer (300);

a first pipe (420) connecting both ends of the heat exchange plate (410) to form the first fluid circuit, a heat transfer fluid being provided in the first fluid circuit;

the heat exchanger (430) is arranged outside the shell (100) and sleeved on the first pipeline (420).

3. The battery distribution device according to claim 2, wherein a flow channel is arranged in the heat exchanger plate (410), and the flow channel has an inlet and an outlet connected to the first pipe (420).

4. The battery power distribution apparatus according to claim 2, wherein an insulating and heat conducting layer is disposed between the heat exchange plate (410) and the composite busbar layer (300), and a pump for flowing the heat conducting fluid in the first fluid circuit is disposed on the first pipe (420).

5. The battery distribution apparatus of claim 2, wherein the heat exchanger (430) comprises a plurality of fins disposed around the first conduit (420), and a fan for facilitating dissipation of heat from the plurality of fins to the external environment.

6. The battery power distribution apparatus of claim 2, wherein the heat sink assembly further comprises a second fluid circuit that cools the heat transfer fluid within the first conduit (420) via the heat exchanger (430).

7. The battery distribution apparatus of claim 6, wherein the heat sink assembly further comprises:

and the second pipeline (450) is connected with the heat exchanger (430) to form the second fluid loop, a refrigeration working medium is arranged in the second fluid loop, and the liquid refrigeration working medium absorbs the heat of the heat-conducting fluid in the first pipeline (420) at the heat exchanger (430) and is converted into the gaseous refrigeration working medium.

8. The battery power distribution apparatus of claim 7, wherein the heat sink assembly further comprises a compressor (460), the compressor (460) configured to compress the refrigerant in the gaseous state into the liquid state and release heat.

9. The battery power distribution apparatus of claim 8, wherein the heat sink assembly further comprises a condenser (440), and the condenser (440) is disposed outside the housing (100) and is configured to dissipate heat released from the refrigerant converted from a gaseous state to a liquid state to the outside environment.

10. A battery pack comprising a battery distribution device according to claims 1 to 9.