WO2021042925A1 - 电池模组 - Google Patents
电池模组 Download PDFInfo
- Publication number
- WO2021042925A1 WO2021042925A1 PCT/CN2020/106460 CN2020106460W WO2021042925A1 WO 2021042925 A1 WO2021042925 A1 WO 2021042925A1 CN 2020106460 W CN2020106460 W CN 2020106460W WO 2021042925 A1 WO2021042925 A1 WO 2021042925A1
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- WO
- WIPO (PCT)
- Prior art keywords
- battery module
- temperature sensing
- sensing element
- conducting plate
- heat conducting
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/105—NTC
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- This application relates to the field of power batteries, and in particular to a battery module.
- the purpose of the embodiments of the present application is to provide a battery module and device, which reduces the deviation between the temperature collected by the temperature sensing element and the actual temperature of the battery, and improves the temperature sampling of the battery module. Reliability and accuracy.
- an embodiment of the present application provides a battery module, which includes a plurality of batteries, a heat conducting plate, and a temperature sensing element.
- a plurality of batteries are arranged along the length direction; the heat-conducting plate is located between the adjacent batteries and is attached to the battery; the temperature sensing element is in contact with the heat-conducting plate.
- the battery module further includes a fixing bracket.
- the fixed bracket has a peripheral wall and a hollow cavity enclosed by the peripheral wall.
- the inner side of the peripheral wall is provided with a limiting groove communicating with the hollow cavity.
- the heat conducting plate is inserted into the limiting groove and seals the hollow cavity; the temperature sensing element is fixed on the fixed bracket ⁇ .
- the peripheral wall is provided with an opening
- the heat-conducting plate has an exposed part exposed in the opening
- the temperature sensing element is in contact with the exposed part of the heat-conducting plate.
- the peripheral wall is provided with a receiving groove
- the opening is located inside the receiving groove
- the temperature sensing element is fixed to the receiving groove and is in contact with the exposed part of the heat conducting plate.
- the peripheral wall is composed of a top wall, a bottom wall and two side walls, the receiving groove is recessed inward with respect to the surface of the top wall along the length direction, and the receiving groove is located at one end of the top wall in the width direction.
- the receiving groove has a first part and a second part; the first part extends in the width direction and the opening is located inside the first part; the second part is connected to the first part and extends from the first part in the height direction.
- the battery module further includes an isolation plate, a collection line, and a connector.
- the isolation board is arranged above the corresponding battery; one end of the collection line is connected to the temperature-sensing element, the other end of the collection line is connected to the connector, and the connector is connected to the circuit board; the part of the collection line connected to the temperature-sensing element is accommodated in the housing ⁇ In the slot.
- a buckle is provided on the isolation board, and the collection line is fixed to the isolation board by the buckle; the top wall of the fixing bracket is provided with a wiring groove with an upward opening, the wiring groove and the second part of the receiving groove Connected, the collection line passes through the cable trough.
- the limiting groove includes a first limiting groove formed on the top wall, the bottom wall, and one of the side walls, and a second limiting groove formed on the other side wall.
- the second limiting groove The groove penetrates the other side wall in the width direction.
- the heat conducting plate includes a main body part and a bending part, the bending part is connected to the main body part and is bent from the main body part in the length direction; the second limiting groove penetrates through the fixing bracket away from the receiving groove in the width direction The side wall; the main body is inserted into the fixing bracket via the second limiting groove, and the bent portion is located on the outer side of the fixing bracket along the length direction.
- the heat conduction plate is attached to the battery, the heat generated by the battery is transferred to the heat conduction plate, and is transferred to the outside through the heat conduction plate, and the temperature sensing element contacts the heat conduction plate to collect the temperature of the battery.
- the temperature of the battery collected by the temperature element through the heat conducting plate is close to the actual temperature of the battery, so the deviation between the temperature collected by the temperature sensor and the actual temperature of the battery can be reduced, and the reliability and accuracy of temperature sampling of the battery module can be improved .
- Figure 1 is a perspective view of a battery module provided by an embodiment of the present application.
- Figure 2 is a top view of a battery module provided by an embodiment of the present application.
- Figure 3 is a partial perspective view of a battery module provided by an embodiment of the present application.
- FIG. 4 is an exploded perspective view of the battery module of FIG. 3;
- FIG. 5 is a partial perspective view of the battery module provided by the embodiment of the present application viewed from another angle;
- FIG. 6 is a front view of the battery module of FIG. 3, in which the isolation plate is omitted;
- FIG. 7 is an assembly perspective view of a fixing bracket and a heat conducting plate of a battery module provided by an embodiment of the present application.
- FIG. 8 is a schematic diagram of assembling the fixing bracket and the heat conducting plate of the battery module provided by the embodiment of the present application.
- FIG. 9 is an exploded perspective view of the fixing bracket and the heat conducting plate of the battery module provided by the embodiment of the present application.
- FIG. 10 is a perspective view of the fixing bracket of the battery module provided by the embodiment of the present application viewed from one angle;
- FIG. 11 is a perspective view of the fixing bracket of the battery module provided by the embodiment of the present application viewed from another angle;
- FIG. 12 is a perspective view of the fixing bracket of the battery module provided by the embodiment of the present application viewed from another angle.
- W width direction
- first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance;
- plural means Refers to two or more (including two);
- connection should be understood in a broad sense.
- “connected” can be a fixed connection, a detachable connection, or an integral connection, or an electrical connection.
- “connection” can be a direct connection or an indirect connection through an intermediary.
- the battery module of the present application includes a plurality of batteries 1, a heat conducting plate 2 and a temperature sensing element 3.
- the plurality of batteries 1 of the battery module are arranged along the longitudinal direction L.
- the heat conducting plate 2 is located between the adjacent batteries 1 and is attached to the batteries 1.
- the temperature sensing element 3 is in contact with the heat conducting plate 2.
- the battery module may further include a fixing bracket 4, an isolation plate 5, a collection line 6 and a connector 7.
- the heat-conducting plate 2 is attached to the battery 1, the heat generated by the battery 1 is transferred to the heat-conducting plate 2, and is transferred to the outside through the heat-conducting plate 2, and the temperature sensing element 3 is in contact with the heat-conducting plate 2 to collect the battery Since the temperature of the battery 1 collected by the temperature sensing element 3 through the heat conducting plate 2 is close to the actual temperature of the battery 1, the difference between the temperature collected by the temperature sensing element 3 and the actual temperature of the battery can be reduced, and the temperature Reliability and accuracy of battery module temperature sampling.
- the battery 1 is a soft pack battery (or called a pouch battery).
- the soft-pack battery includes a packaging bag (for example, formed of aluminum plastic film), an electrode assembly, and tabs 11.
- the electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator that separates the positive electrode sheet and the negative electrode sheet.
- a part of the tab is enclosed in the packaging bag and the other part extends out of the packaging bag.
- the tab 11 may be directly formed by a pole piece or use an independent conductive material and be electrically connected to a current collector.
- the heat conducting plate 2 is an aluminum plate.
- the heat conducting plate 2 includes a main body portion 22 and a bending portion 23, and the bending portion 23 is connected to the main body portion 22 and is bent from the main body portion 22 in the longitudinal direction L.
- the temperature sensing element 3 is an NTC thermistor for collecting temperature.
- the fixing of the temperature sensing element 3 can be realized by the fixing bracket 4.
- the material of the fixing bracket 4 is plastic.
- the fixing bracket 4 has a peripheral wall 41 and a hollow cavity 42 surrounded by the peripheral wall 41.
- the peripheral wall 41 is composed of a top wall 41b, a bottom wall 41c, and two side walls 41d.
- the inner surface 41 a of the peripheral wall 41 is provided with a limiting groove 411 communicating with the hollow cavity 42, and the heat conducting plate 2 is inserted into the limiting groove 411 to seal the hollow cavity 42.
- the temperature sensing element 3 is fixed to the peripheral wall 41 of the fixing bracket 4.
- the fixing of the temperature sensing element 3 is realized.
- the peripheral wall 41 is provided with an opening 412, and the heat conducting plate 2 has an exposed portion 21 exposed in the opening 412, The temperature element 3 is in contact with the exposed portion 21 of the heat conducting plate 2.
- the peripheral wall 41 is provided with a receiving groove 413, the opening 412 is located inside the receiving groove 413, and the temperature sensing element 3 is fixed in the receiving groove 413 and is in contact with the exposed portion 21 of the heat conducting plate 2. Therefore, the temperature sensing element 3 does not need to occupy additional space, thereby increasing the energy density of the battery module.
- the receiving groove 413 is recessed inward relative to the surface of the top wall 41b in the length direction L, and the receiving groove 413 is preferably located at one end of the top wall 41b in the width direction W, that is to say
- the temperature sensing element 3 is preferably arranged at one end of the top wall 41b along the width direction W. At this position, the temperature collected by the temperature sensing element 3 is closest to the actual temperature of the battery 1.
- the limiting groove 411 includes a first limiting groove 411a formed on the top wall 41b, the bottom wall 41c and one of the side walls, and a second limiting groove formed on the other side wall 41d 411b, the second limiting groove 411b penetrates the other side wall 41d along the width direction W.
- the second limiting groove 411b preferably penetrates the side wall 41d of the fixing bracket 4 away from the receiving groove 413 along the width direction W, so as to prevent the second limiting groove 411b from affecting the temperature measurement of the temperature sensing element 3.
- the main body 22 of the heat conducting plate 2 is inserted into the fixing bracket 4 through the second limiting groove 411 b, and the bent portion 23 is located outside the fixing bracket 4 in the length direction L.
- the heat conducting plate 2 is installed on the fixing bracket 4.
- the receiving groove 413 has a first part 413a and a second part 413b; the first part 413a extends in the width direction W and the opening 412 is located inside the first part 413a; the second part 413b is connected to the first part 413a A part 413a extends along the height direction H from the first part 413a.
- the structure of the receiving slot 413 is not limited to this.
- thermally conductive glue can be used to fix the temperature sensing element 3 to the first part 413a of the receiving groove 413.
- the isolation plate 5 is arranged above the corresponding battery 1.
- the partition plate 5 has a through groove 52 penetrating in the height direction H, and the tab 11 passes through the through groove 52.
- one end of the collection line 6 is connected to the temperature sensing element 3, the other end of the collection line 6 is connected to the connector 7, and the connector 7 is connected to the circuit board (not shown), so as to realize the connection to the battery module.
- the part of the collection wire 6 connected to the temperature sensing element 3 is accommodated in the receiving groove 413 to facilitate wire routing.
- the part of the collecting wire 6 connected to the temperature sensing element 3 can be accommodated in the second part 413 b of the receiving groove 413.
- the collection line 6 In order to ensure the contact between the temperature sensing element 3 and the heat conducting plate 2, the collection line 6 needs to be reliably fixed.
- a buckle 51 is provided on the isolation board 5, and the collection line 6 is fixed on the isolation board 5 by the buckle 51.
- the fixing of the buckle 51 reduces the pulling of the collection wire 6 on the temperature sensing element 3 during the vibration and impact process, so that the reliability of the contact between the temperature sensing element 3 and the heat conducting plate 2 can be improved.
- the top wall 41b of the fixing bracket 4 is provided with a wiring groove R with an upward opening.
- the wiring groove R is communicated with the second part 413b of the receiving groove 413, and the collection line 6 passes through the wiring groove R.
- the collecting wire 6 can be fixed along the direction of the wire routing groove R and the second part 413b by thermally conductive glue.
- An embodiment of the present application also provides a device, including the battery module described in the foregoing embodiment, and the battery module is used to provide electrical energy.
- the device may be a vehicle or an energy storage device.
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Abstract
一种电池模组,该电池模组包括多个电池(1)、导热板(2)以及感温元件(3)。多个电池(1)沿长度方向排列;导热板(2)位于相邻电池(1)之间且与电池(1)贴合;感温元件(3)与导热板(2)接触。在电池模组中,导热板(2)与电池(1)贴合,电池(1)产生的热量传递给导热板(2),并通过导热板(2)向外传递,感温元件(3)与导热板(2)接触以采集电池(1)的温度,由于感温元件(3)通过导热板(2)采集到的电池(1)的温度与电池(1)的实际温度接近,因此能够降低感温元件(3)采集的温度与电池(1)的实际温度之间的偏差,提高了电池模组温度采样的可靠性和准确性。
Description
本申请要求于2019年09月06日提交中国专利局、申请号为201921478827.8、申请名称为“电池模组”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请涉及动力电池领域,尤其涉及一种电池模组。
目前软包电池模组的温度采样方式主要有两种,一种是在连接片(位于电池上方并连接相邻电池的电极端子)上布置感温元件(如NTC热敏电阻),该方法存在的问题是软包电池的极耳薄,散热困难,并且电池模组处于大电流工况中时,连接片上的过流较大,所以采集到的温度与电池的实际温度相比较高;另一种是通过粘接胶将感温元件直接固定在电池上,该方法存在的问题是由于受温度和电池膨胀的影响(粘接胶的粘接性能下降),当电池模组长期使用时,热敏电阻与电池的连接可靠性变差,从而导致感温元件采集到的温度与电池实际温度存在较大偏差。
发明内容
鉴于现有技术存在的缺陷,本申请实施例的目的在于提供一种电池模组及装置,其降低了感温元件采集的温度与电池的实际温度之间的偏差,提高了电池模组温度采样的可靠性和准确性。
为了实现上述目的,本申请实施例提供了一种电池模组,其包括多个电池、导热板以及感温元件。多个电池沿长度方向排列;导热板位于相邻电池之间且与电池贴合;感温元件与导热板接触。
在一实施例中,电池模组还包括固定支架。固定支架具有周壁以及由周壁围成的中空腔,周壁的内侧面设有连通中空腔的限位凹槽,导热板插装于限位凹槽中并密封中空腔;感温元件固定于固定支架的周壁。
在一实施例中,周壁设有开孔,导热板具有露出于开孔的露出部分,感温元件与导热板的露出部分接触。
在一实施例中,周壁设有收容槽,开孔位于收容槽内侧,感温元件固定于收容槽并与导热板的露出部分接触。
在一实施例中,周壁由顶壁、底壁以及两侧壁构成,收容槽相对于顶壁沿长度方向的表面向内凹陷,且收容槽位于顶壁沿宽度方向的一端。
在一实施例中,收容槽具有第一部分和第二部分;第一部分沿宽度方向延伸且开孔位于第一部分内侧;第二部分连接于第一部分且从第一部分沿高度方向延伸。
在一实施例中,电池模组还包括隔离板、采集线以及插接件。隔离板设置于对应电池的上方;采集线的一端连接于感温元件,采集线的另一端连接于插接件,插接件连接于电路板;采集线连接于感温元件的部分收容于收容槽内。
在一实施例中,隔离板上设置有卡扣,采集线通过卡扣固定于隔离板上;固定支架的顶壁上设置有开口向上的走线槽,走线槽与收容槽的第二部分连通,采集线穿过走线槽。
在一实施例中,限位凹槽包括形成于顶壁、底壁以及其中一侧壁的第一限位凹槽以及形成于另一侧壁的第二限位凹槽,第二限位凹槽沿宽度方向贯通所述另一侧壁。
在一实施例中,导热板包括主体部和弯折部,弯折部连接于主体部且从主体部沿长度方向弯折;第二限位凹槽沿宽度方向贯通固定支架的远离收容槽的侧壁;主体部经由第二限位凹槽插入固定支架,弯折部位于固定支架沿长度方向外侧。
本申请的有益效果如下:
在本申请实施例的电池模组中,导热板与电池贴合,电池产生的热量传递给导热板,并通过导热板向外传递,感温元件与导热板接触以采集电池的温度,由于感温元件通过导热板采集到的电池的温度与电池的实际温度接近,因此能够降低感温元件采集的温度与电池的实际温度之间的偏差,提高了电池模组温度采样的可靠性和准确性。
图1是本申请实施例提供的电池模组的立体图;
图2是本申请实施例提供的电池模组的俯视图;
图3是本申请实施例提供的电池模组的部分立体图;
图4是图3的电池模组的分解立体图;
图5是从另一角度观察的本申请实施例提供的电池模组的部分立体图;
图6是图3的电池模组的前视图,其中省略隔离板;
图7是本申请实施例提供的电池模组的固定支架与导热板的组装立体图;
图8是本申请实施例提供的电池模组的固定支架与导热板的组装示意图;
图9是本申请实施例提供的电池模组的固定支架与导热板的分解立体图;
图10是从一角度观察的本申请实施例提供的电池模组的固定支架的立体图;
图11是从另一角度观察的本申请实施例提供的电池模组的固定支架的立体图;
图12是从再一角度观察的本申请实施例提供的电池模组的固定支架的立体图。
其中,附图标记说明如下:
1:电池;
11:极耳;
2:导热板;
21:露出部分;
22:主体部;
23:弯折部;
3:感温元件;
4:固定支架;
41:周壁;
41a:内侧面;
41b:顶壁;
41c:底壁;
41d:侧壁;
411:限位凹槽;
411a:第一限位凹槽;
411b:第二限位凹槽;
412:开孔;
413:收容槽;
413a:第一部分;
413b:第二部分;
42:中空腔;
R:走线槽;
5:隔离板;
51:卡扣;
52:贯通槽;
6:采集线;
7:插接件;
8:端板;
L:长度方向;
W:宽度方向;
H:高度方向。
附图示出本申请的实施例,且将理解的是,所公开的实施例仅仅是本申请的示例,本申请可以以各种形式实施,因此,本文公开的具体细节不应被解释为限制,而是仅作为权利要求的基础且作为表示性的基础用于教导本领域普通技术人员以各种方式实施本申请。
在本申请的描述中,除非另有明确的规定和限定,术语“第一”、“第二”仅用于描述的目的,而不能理解为指示或暗示相对重要性;术语“多个”是指两个以上(包括两个);除非另有规定或说明,术语“连接”应做广义理解,例如,“连接”可以是固定连接,也可以是可拆卸连接,或 一体地连接,或电连接,或信号连接;“连接”可以是直接相连,也可以通过中间媒介间接相连。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本申请中的具体含义。
本说明书的描述中,需要理解的是,本申请实施例所描述的“上”、“下”等指示方向的方位词是以附图所示的角度来进行描述的,不应理解为对本申请实施例的限定。
下面参照附图详细说明根据本申请的电池模组。
参照图1至图6,本申请的电池模组包括多个电池1、导热板2以及感温元件3。电池模组的多个电池1沿长度方向L排列。导热板2位于相邻电池1之间且与电池1贴合。感温元件3与导热板2接触。如图2所示,电池模组还可包括固定支架4、隔离板5、采集线6以及插接件7。
在本申请的电池模组中,导热板2与电池1贴合,电池1产生的热量传递给导热板2,并通过导热板2向外传递,感温元件3与导热板2接触以采集电池1的温度,由于感温元件3通过导热板2采集到的电池1的温度与电池1的实际温度接近,因此能够降低感温元件3采集的温度与电池的实际温度之间的偏差,提高了电池模组温度采样的可靠性和准确性。
参照图4,电池1为软包电池(或称为袋型电池)。软包电池包括封装袋(例如由铝塑膜形成)、电极组件以及极耳11。电极组件包括正极片、负极片以及将正极片和负极片间隔开的隔离膜。极耳的一部分封装在封装袋内而另一部分延伸出封装袋。极耳11可以由极片直接形成或采用独立的导电材料并电连接于集流体。
导热板2为铝板。导热板2包括主体部22和弯折部23,弯折部23连接于主体部22且从主体部22沿长度方向L弯折。
感温元件3为NTC热敏电阻,用于采集温度。
参照图3至图5,感温元件3的固定可通过固定支架4实现。固定支架4的材质为塑胶。如图7至图12所示,固定支架4具有周壁41以及由周壁41围成的中空腔42。进一步地,周壁41由顶壁41b、底壁41c以及两侧壁41d构成。周壁41的内侧面41a设有连通中空腔42的限位凹槽411,导热板2插装于限位凹槽411中并密封中空腔42。感温元件3固定于固定支架4的周壁41。从而实现感温元件3的固定。
如图6和图7所示,为了方便固定于固定支架4的感温元件3与导热 板2接触,周壁41设有开孔412,导热板2具有露出于开孔412的露出部分21,感温元件3与导热板2的露出部分21接触。
参照图6至图10,周壁41设有收容槽413,开孔412位于收容槽413内侧,感温元件3固定于收容槽413并与导热板2的露出部分21接触。因此感温元件3无需占用额外的空间,从而提高电池模组的能量密度。
如图6至图11所示,进一步地,收容槽413相对于顶壁41b沿长度方向L的表面向内凹陷,且收容槽413优选地位于顶壁41b沿宽度方向W的一端,也就是说,感温元件3优选地设置于顶壁41b沿宽度方向W的一端,在该位置处,感温元件3采集到的温度与电池1的实际温度最接近。因为在顶壁41b靠近宽度方向W的中间位置处,受电池1的极耳11位置处发热严重的影响,会使感温元件3实际采集到的温度偏高,在两侧壁41d的位置处,电池1散热较好,会使感温元件3实际采集到的温度偏低。参照图8至图12,限位凹槽411包括形成于顶壁41b、底壁41c以及其中一侧壁的第一限位凹槽411a以及形成于另一侧壁41d的第二限位凹槽411b,第二限位凹槽411b沿宽度方向W贯通另一侧壁41d。第二限位凹槽411b优选沿宽度方向W贯通固定支架4的远离收容槽413的侧壁41d,以避免第二限位凹槽411b影响感温元件3测温。导热板2的主体部22经由第二限位凹槽411b插入固定支架4,弯折部23位于固定支架4沿长度方向L外侧。从而使导热板2安装于固定支架4。
如图9和图10所示,具体地,收容槽413具有第一部分413a和第二部分413b;第一部分413a沿宽度方向W延伸且开孔412位于第一部分413a内侧;第二部分413b连接于第一部分413a且从第一部分413a沿高度方向H延伸。当然收容槽413的结构不限于此。另外可使用导热胶将感温元件3固定于收容槽413的第一部分413a。
返回参照图1至图4,隔离板5设置于对应电池1的上方。隔离板5具有沿高度方向H贯通的贯通槽52,极耳11从贯通槽52穿出。
如图4所示,采集线6的一端连接于感温元件3,采集线6的另一端连接于插接件7,插接件7连接于电路板(未示出),从而实现连通电池模组的整个温度采样回路。采集线6连接于感温元件3的部分收容于收容槽413内,以便于走线。具体地,采集线6连接于感温元件3的部分可收容于收容槽413的第二部分413b。
为了保证感温元件3与导热板2的接触,需要可靠固定采集线6。具体地,隔离板5上设置有卡扣51,采集线6通过卡扣51固定于隔离板5上。卡扣51固定减小了采集线6在振动冲击过程中对感温元件3的拉扯,因此能够提高感温元件3与导热板2接触的可靠性。固定支架4的顶壁41b上设置有开口向上的走线槽R,走线槽R与收容槽413的第二部分413b连通,采集线6穿过走线槽R。另外,可通过导热胶顺着走线槽R和第二部分413b的方向将采集线6固定。
本申请实施例还提供一种装置,包括上述实施例描述的电池模组,电池模组用于提供电能。其中,装置可以为车辆或者储能装置。
上面详细的说明描述多个示范性实施例,但本文不意欲限制到明确公开的组合。因此,除非另有说明,本文所公开的各种特征可以组合在一起而形成出于简明目的而未示出的多个另外组合。
以上描述仅为本申请的优选实施例而已,并不用于限制本申请,对于本领域的技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。
Claims (10)
- 一种电池模组,其特征在于,包括多个电池(1)、导热板(2)以及感温元件(3);多个电池(1)沿长度方向(L)排列;导热板(2)位于相邻电池(1)之间且与电池(1)贴合;感温元件(3)与导热板(2)接触。
- 根据权利要求1所述的电池模组,其特征在于,电池模组还包括固定支架(4);固定支架(4)具有周壁(41)以及由周壁(41)围成的中空腔(42),周壁(41)的内侧面(41a)设有连通中空腔(42)的限位凹槽(411),导热板(2)插装于限位凹槽(411)中并密封中空腔(42);感温元件(3)固定于固定支架(4)的周壁(41)。
- 根据权利要求2所述的电池模组,其特征在于,周壁(41)设有开孔(412),导热板(2)具有露出于开孔(412)的露出部分(21),感温元件(3)与导热板(2)的露出部分(21)接触。
- 根据权利要求2或3所述的电池模组,其特征在于,周壁(41)设有收容槽(413),开孔(412)位于收容槽(413)内侧,感温元件(3)固定于收容槽(413)并与导热板(2)的露出部分(21)接触。
- 根据权利要求4所述的电池模组,其特征在于,周壁(41)由顶壁(41b)、底壁(41c)以及两侧壁(41d)构成,收容槽(413)相对于顶壁(41b)沿长度方向(L)的表面向内凹陷,且收容槽(413)位于顶壁(41b)沿宽度方向(W)的一端。
- 根据权利要求4或5所述的电池模组,其特征在于,收容槽(413)具有第一部分(413a)和第二部分(413b);第一部分(413a)沿宽度方向(W)延伸且开孔(412)位于第一部分(413a)内侧;第二部分(413b)连接于第一部分(413a)且从第一部分(413a)沿高度方向(H)延伸。
- 根据权利要求1-6任一项所述的电池模组,其特征在于,电池模组还包括隔离板(5)、采集线(6)以及插接件(7);隔离板(5)设置于对应电池(1)的上方;采集线(6)的一端连接于感温元件(3),采集线(6)的另一端连接于插接件(7),插接件(7)连接于电路板;采集线(6)连接于感温元件(3)的部分收容于收容槽(413)内。
- 根据权利要求7所述的电池模组,其特征在于,隔离板(5)上设置有卡扣(51),采集线(6)通过卡扣(51)固定于隔离板(5)上;固定支架(4)的顶壁(41b)上设置有开口向上的走线槽(R),走线槽(R)与收容槽(413)的第二部分(413b)连通,采集线(6)穿过走线槽(R)。
- 根据权利要求2-6任一项所述的电池模组,其特征在于,限位凹槽(411)包括形成于顶壁(41b)、底壁(41c)以及其中一侧壁的第一限位凹槽(411a)以及形成于另一侧壁(41d)的第二限位凹槽(411b),第二限位凹槽(411b)沿宽度方向(W)贯通所述另一侧壁(41d)。
- 根据权利要求9所述的电池模组,其特征在于,导热板(2)包括主体部(22)和弯折部(23),弯折部(23)连接于主体部(22)且从主体部(22)沿长度方向(L)弯折;第二限位凹槽(411b)沿宽度方向(W)贯通固定支架(4)的远离收容槽(413)的侧壁(41d);主体部(22)经由第二限位凹槽(411b)插入固定支架(4),弯折部(23)位于固定支架(4)沿长度方向(L)外侧。
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